Public bug reported:
Hello there,
this may turn out to be a kernel thing, but it appears to me that the
bug must have something to do with the plasma-kscreen.service or the
kscreen_backend_launcher executable.
My laptop has an integrated graphics card plus a NVIDIA GPU.
Observe NVIDIA GPU state before triggering the bug:
cd /sys/bus/pci/devices/0000:01:00.0/
cat power/runtime_status
-> suspended
cat power_state
-> D3cold
The bug can be triggered by at least 2 commands:
lspci
xrandr
After running either command, the GPU status changes to "active" but it won't
go back to "suspended":
cat power/runtime_status
-> active
cat power_state
-> D0
The laptop then runs increasingly hot to the point where I have to shut down
the laptop.
And the desktop task panel disappears.
Besides the commands mentioned (lspci, xrandr), the bug can be triggered
through opening the XScreenSaver Settings menu. When the bug occurs, I
have no applications running other than qterminal or the xscreensaver
settings menu, respectively. When I reboot the laptop, the GPU is turned
off again. I.e. power/runtime_status is back to "suspended" and
temperatures slowly go back to normal. I can trigger the bug 100%
consistently as described above.
I looked at journalctl each time the bug had been triggered.
But no matter how the bug is triggered in the first place (through lspci,
xrandr, or opening the xscreensaver settings menu), the chain of events is the
same:
...
Jul 14 08:03:24 f-aspirev3771 kernel: nouveau 0000:01:00.0: Enabling HDA
controller
Jul 14 08:03:24 f-aspirev3771 kernel: nouveau 0000:01:00.0: drm:
[DRM/00000000:kmsOutp] [LOAD_DETECT data:00000154] load:07 (ret:7)
Jul 14 08:03:24 f-aspirev3771 kernel: nouveau 0000:01:00.0: drm:
[DRM/00000000:kmsOutp] [LOAD_DETECT data:00000154] load:07 (ret:7)
Jul 14 08:03:24 f-aspirev3771 kernel: nouveau 0000:01:00.0: drm:
[DRM/00000000:kmsOutp] [LOAD_DETECT data:00000154] load:07 (ret:7)
Jul 14 08:03:24 f-aspirev3771 kernel: nouveau 0000:01:00.0: drm:
[DRM/00000000:kmsOutp] [LOAD_DETECT data:00000154] load:07 (ret:7)
Jul 14 08:03:24 f-aspirev3771 dbus-daemon[1133]: [session uid=1000 pid=1133
pidfd=5] Activating via systemd: service name='org.kde.KScreen'
unit='plasma-kscreen.service' requested by ':1.102' (uid=1000 pid=10326
comm="/usr/bin/lxqt-config-monitor -l" label="unconfined")
Jul 14 08:03:24 f-aspirev3771 systemd[1085]: Created slice background.slice -
User Background Tasks Slice.
Jul 14 08:03:24 f-aspirev3771 systemd[1085]: Starting plasma-kscreen.service -
KScreen...
Jul 14 08:03:24 f-aspirev3771 dbus-daemon[1133]: [session uid=1000 pid=1133
pidfd=5] Successfully activated service 'org.kde.KScreen'
Jul 14 08:03:24 f-aspirev3771 systemd[1085]: Started plasma-kscreen.service -
KScreen.
Jul 14 08:03:24 f-aspirev3771 kernel: nouveau 0000:01:00.0: drm:
[DRM/00000000:kmsOutp] [LOAD_DETECT data:00000154] load:07 (ret:7)
Jul 14 08:03:24 f-aspirev3771 kscreen_backend_launcher[10335]: kscreen.xrandr:
Connected output 65 to CRTC 62
Jul 14 08:03:24 f-aspirev3771 kscreen_backend_launcher[10335]:
kscreen.xcb.helper: Detected XRandR 1.6
Jul 14 08:03:24 f-aspirev3771 kscreen_backend_launcher[10335]:
kscreen.xcb.helper: Event Base: 89
Jul 14 08:03:24 f-aspirev3771 kscreen_backend_launcher[10335]:
kscreen.xcb.helper: Event Error: 147
Jul 14 08:03:24 f-aspirev3771 kscreen_backend_launcher[10335]: kscreen.xrandr:
XRandR::setConfig
Jul 14 08:03:24 f-aspirev3771 kscreen_backend_launcher[10335]: kscreen.xrandr:
Requested screen size is QSize(2944, 1080)
Jul 14 08:03:24 f-aspirev3771 kscreen_backend_launcher[10335]: kscreen.xrandr:
Needed CRTCs: 2
Jul 14 08:03:24 f-aspirev3771 kscreen_backend_launcher[10335]: kscreen.xrandr:
Actions to perform:
Jul 14 08:03:24 f-aspirev3771 kscreen_backend_launcher[10335]:
Priorities: true
Jul 14 08:03:24 f-aspirev3771 kscreen_backend_launcher[10335]: kscreen.xrandr:
Output 65
Jul 14 08:03:24 f-aspirev3771 kscreen_backend_launcher[10335]:
Old: "0"
Jul 14 08:03:24 f-aspirev3771 kscreen_backend_launcher[10335]:
New: "2"
Jul 14 08:03:24 f-aspirev3771 kscreen_backend_launcher[10335]: kscreen.xrandr:
Output 157
Jul 14 08:03:24 f-aspirev3771 kscreen_backend_launcher[10335]:
Old: "0"
Jul 14 08:03:24 f-aspirev3771 kscreen_backend_launcher[10335]:
New: "1"
Jul 14 08:03:24 f-aspirev3771 kscreen_backend_launcher[10335]: kscreen.xrandr:
Change Screen Size: true
Jul 14 08:03:24 f-aspirev3771 kscreen_backend_launcher[10335]: kscreen.xrandr:
Old: QSize(1920, 1080)
Jul 14 08:03:24 f-aspirev3771 kscreen_backend_launcher[10335]:
Intermediate: QSize(2944, 1080)
Jul 14 08:03:24 f-aspirev3771 kscreen_backend_launcher[10335]:
New: QSize(2944, 1080)
Jul 14 08:03:24 f-aspirev3771 kscreen_backend_launcher[10335]: kscreen.xrandr:
Disable outputs: false
Jul 14 08:03:24 f-aspirev3771 kscreen_backend_launcher[10335]: kscreen.xrandr:
Change outputs: false
Jul 14 08:03:24 f-aspirev3771 kscreen_backend_launcher[10335]: kscreen.xrandr:
Enable outputs: true
Jul 14 08:03:24 f-aspirev3771 kscreen_backend_launcher[10335]: kscreen.xrandr:
QList(157)
Jul 14 08:03:24 f-aspirev3771 kscreen_backend_launcher[10335]: kscreen.xrandr:
RRSetScreenSize
Jul 14 08:03:24 f-aspirev3771 kscreen_backend_launcher[10335]: DPI:
96.2526
Jul 14 08:03:24 f-aspirev3771 kscreen_backend_launcher[10335]: Size:
QSize(2944, 1080)
Jul 14 08:03:24 f-aspirev3771 kscreen_backend_launcher[10335]: SizeMM:
QSize(776, 285)
Jul 14 08:03:24 f-aspirev3771 kscreen_backend_launcher[10335]: kscreen.xrandr:
QMap((62, XRandRCrtc(0x58eec88873e0))(63, XRandRCrtc(0x7242e8008de0))(64,
XRandRCrtc(0x58eec8941470))(155, XRandRCrtc(0x58eec8941780))(156,
XRandRCrtc(0x58eec8941710)))
Jul 14 08:03:25 f-aspirev3771 kscreen_backend_launcher[10335]: kscreen.xrandr:
Testing CRTC 62
Jul 14 08:03:25 f-aspirev3771 kscreen_backend_launcher[10335]: Free:
false
Jul 14 08:03:25 f-aspirev3771 kscreen_backend_launcher[10335]: Mode: 70
Jul 14 08:03:25 f-aspirev3771 kscreen_backend_launcher[10335]:
Possible outputs: QList(65, 66, 67, 68)
Jul 14 08:03:25 f-aspirev3771 kscreen_backend_launcher[10335]:
Connected outputs: QList(65)
Jul 14 08:03:25 f-aspirev3771 kscreen_backend_launcher[10335]:
Geometry: QRect(0,0 1920x1080)
Jul 14 08:03:25 f-aspirev3771 kscreen_backend_launcher[10335]: kscreen.xrandr:
Testing CRTC 63
Jul 14 08:03:25 f-aspirev3771 kscreen_backend_launcher[10335]: Free:
true
Jul 14 08:03:25 f-aspirev3771 kscreen_backend_launcher[10335]: Mode: 0
Jul 14 08:03:25 f-aspirev3771 kscreen_backend_launcher[10335]:
Possible outputs: QList(65, 66, 67, 68)
Jul 14 08:03:25 f-aspirev3771 kscreen_backend_launcher[10335]:
Connected outputs: QList()
Jul 14 08:03:25 f-aspirev3771 kscreen_backend_launcher[10335]:
Geometry: QRect(0,0 0x0)
Jul 14 08:03:25 f-aspirev3771 kscreen_backend_launcher[10335]: kscreen.xrandr:
Testing CRTC 64
Jul 14 08:03:25 f-aspirev3771 kscreen_backend_launcher[10335]: Free:
true
Jul 14 08:03:25 f-aspirev3771 kscreen_backend_launcher[10335]: Mode: 0
Jul 14 08:03:25 f-aspirev3771 kscreen_backend_launcher[10335]:
Possible outputs: QList(65, 66, 67, 68)
Jul 14 08:03:25 f-aspirev3771 kscreen_backend_launcher[10335]:
Connected outputs: QList()
Jul 14 08:03:25 f-aspirev3771 kscreen_backend_launcher[10335]:
Geometry: QRect(0,0 0x0)
Jul 14 08:03:25 f-aspirev3771 kscreen_backend_launcher[10335]: kscreen.xrandr:
Testing CRTC 155
Jul 14 08:03:25 f-aspirev3771 kscreen_backend_launcher[10335]: Free:
true
Jul 14 08:03:25 f-aspirev3771 kscreen_backend_launcher[10335]: Mode: 0
Jul 14 08:03:25 f-aspirev3771 kscreen_backend_launcher[10335]:
Possible outputs: QList(157)
Jul 14 08:03:25 f-aspirev3771 kscreen_backend_launcher[10335]:
Connected outputs: QList()
Jul 14 08:03:25 f-aspirev3771 kscreen_backend_launcher[10335]:
Geometry: QRect(0,0 0x0)
Jul 14 08:03:25 f-aspirev3771 kscreen_backend_launcher[10335]: kscreen.xrandr:
RRSetCrtcConfig (enable output)
Jul 14 08:03:25 f-aspirev3771 kscreen_backend_launcher[10335]: Output:
157 ( "VGA-1-2" )
Jul 14 08:03:25 f-aspirev3771 kscreen_backend_launcher[10335]: New
CRTC: 155
Jul 14 08:03:25 f-aspirev3771 kscreen_backend_launcher[10335]: Pos:
QPoint(1920,0)
Jul 14 08:03:25 f-aspirev3771 kscreen_backend_launcher[10335]: Mode:
KScreen::Mode(Id: "159" , Size: QSize(1024, 768) @ 60.0038 ) Preferred: "159"
Jul 14 08:03:25 f-aspirev3771 kscreen_backend_launcher[10335]:
Rotation: KScreen::Output::None
Jul 14 08:03:25 f-aspirev3771 kscreen_backend_launcher[10335]: kscreen.xrandr:
XRandRCrtc 155 m_timestamp update 0 => 6629437
Jul 14 08:03:25 f-aspirev3771 kscreen_backend_launcher[10335]: kscreen.xrandr:
Result: 0 timestamp: 6629437
Jul 14 08:03:25 f-aspirev3771 kscreen_backend_launcher[10335]: kscreen.xrandr:
XRandROutput 157 update
Jul 14 08:03:25 f-aspirev3771 kscreen_backend_launcher[10335]:
m_connected: 0
Jul 14 08:03:25 f-aspirev3771 kscreen_backend_launcher[10335]: m_crtc
QObject(0x0)
Jul 14 08:03:25 f-aspirev3771 kscreen_backend_launcher[10335]: CRTC:
155
Jul 14 08:03:25 f-aspirev3771 kscreen_backend_launcher[10335]: MODE:
159
Jul 14 08:03:25 f-aspirev3771 kscreen_backend_launcher[10335]:
Connection: 0
Jul 14 08:03:25 f-aspirev3771 kscreen_backend_launcher[10335]: kscreen.xrandr:
Connected output 157 to CRTC 155
Jul 14 08:03:25 f-aspirev3771 kscreen_backend_launcher[10335]: kscreen.xrandr:
RRSetOutputPrimary
Jul 14 08:03:25 f-aspirev3771 kscreen_backend_launcher[10335]: New
priority: 2
Jul 14 08:03:25 f-aspirev3771 kscreen_backend_launcher[10335]: kscreen.xrandr:
RRSetOutputPrimary
Jul 14 08:03:25 f-aspirev3771 kscreen_backend_launcher[10335]: New
priority: 0
Jul 14 08:03:25 f-aspirev3771 kscreen_backend_launcher[10335]: kscreen.xrandr:
RRSetOutputPrimary
Jul 14 08:03:25 f-aspirev3771 kscreen_backend_launcher[10335]: New
priority: 0
Jul 14 08:03:25 f-aspirev3771 kscreen_backend_launcher[10335]: kscreen.xrandr:
RRSetOutputPrimary
Jul 14 08:03:25 f-aspirev3771 kscreen_backend_launcher[10335]: New
priority: 0
Jul 14 08:03:25 f-aspirev3771 kscreen_backend_launcher[10335]: kscreen.xrandr:
RRSetOutputPrimary
Jul 14 08:03:25 f-aspirev3771 kscreen_backend_launcher[10335]: New
priority: 1
Jul 14 08:03:25 f-aspirev3771 kscreen_backend_launcher[10335]: kscreen.xrandr:
XRandR::setConfig done!
Jul 14 08:03:25 f-aspirev3771 kscreen_backend_launcher[10335]:
kscreen.xcb.helper: RRScreenChangeNotify
Jul 14 08:03:25 f-aspirev3771 kscreen_backend_launcher[10335]:
kscreen.xcb.helper: Timestamp: 17933
Jul 14 08:03:25 f-aspirev3771 kscreen_backend_launcher[10335]:
kscreen.xcb.helper: Config_timestamp: 2143446
Jul 14 08:03:25 f-aspirev3771 kscreen_backend_launcher[10335]:
kscreen.xcb.helper: Window: 52428806
Jul 14 08:03:25 f-aspirev3771 kscreen_backend_launcher[10335]:
kscreen.xcb.helper: Root: 611
Jul 14 08:03:25 f-aspirev3771 kscreen_backend_launcher[10335]:
kscreen.xcb.helper: Rotation: "Rotate_0"
Jul 14 08:03:25 f-aspirev3771 kscreen_backend_launcher[10335]:
kscreen.xcb.helper: Size ID: 65535
Jul 14 08:03:25 f-aspirev3771 kscreen_backend_launcher[10335]:
kscreen.xcb.helper: Size: 2944 1080
Jul 14 08:03:25 f-aspirev3771 kscreen_backend_launcher[10335]:
kscreen.xcb.helper: SizeMM: 776 285
Jul 14 08:03:25 f-aspirev3771 kscreen_backend_launcher[10335]:
kscreen.xcb.helper: RRNotify_CrtcChange
Jul 14 08:03:25 f-aspirev3771 kscreen_backend_launcher[10335]:
kscreen.xcb.helper: Timestamp: 17933
Jul 14 08:03:25 f-aspirev3771 kscreen_backend_launcher[10335]:
kscreen.xcb.helper: CRTC: 155
Jul 14 08:03:25 f-aspirev3771 kscreen_backend_launcher[10335]:
kscreen.xcb.helper: Mode: 159
Jul 14 08:03:25 f-aspirev3771 kscreen_backend_launcher[10335]:
kscreen.xcb.helper: Rotation: "Rotate_0"
Jul 14 08:03:25 f-aspirev3771 kscreen_backend_launcher[10335]:
kscreen.xcb.helper: Geometry: 1920 0 1024 768
Jul 14 08:03:25 f-aspirev3771 kscreen_backend_launcher[10335]:
kscreen.xcb.helper: RRNotify_OutputChange
Jul 14 08:03:25 f-aspirev3771 kscreen_backend_launcher[10335]:
kscreen.xcb.helper: Timestamp: 17933
Jul 14 08:03:25 f-aspirev3771 kscreen_backend_launcher[10335]:
kscreen.xcb.helper: Output: 157
Jul 14 08:03:25 f-aspirev3771 kscreen_backend_launcher[10335]:
kscreen.xcb.helper: CRTC: 155
Jul 14 08:03:25 f-aspirev3771 kscreen_backend_launcher[10335]:
kscreen.xcb.helper: Mode: 159
Jul 14 08:03:25 f-aspirev3771 kscreen_backend_launcher[10335]:
kscreen.xcb.helper: Rotation: "Rotate_0"
Jul 14 08:03:25 f-aspirev3771 kscreen_backend_launcher[10335]:
kscreen.xcb.helper: Connection: "Connected"
Jul 14 08:03:25 f-aspirev3771 kscreen_backend_launcher[10335]:
kscreen.xcb.helper: Subpixel Order: 0
Jul 14 08:03:25 f-aspirev3771 kscreen_backend_launcher[10335]:
kscreen.xcb.helper: RRScreenChangeNotify
Jul 14 08:03:25 f-aspirev3771 kscreen_backend_launcher[10335]:
kscreen.xcb.helper: Timestamp: 17933
Jul 14 08:03:25 f-aspirev3771 kscreen_backend_launcher[10335]:
kscreen.xcb.helper: Config_timestamp: 2143446
Jul 14 08:03:25 f-aspirev3771 kscreen_backend_launcher[10335]:
kscreen.xcb.helper: Window: 52428806
Jul 14 08:03:25 f-aspirev3771 kscreen_backend_launcher[10335]:
kscreen.xcb.helper: Root: 611
Jul 14 08:03:25 f-aspirev3771 kscreen_backend_launcher[10335]:
kscreen.xcb.helper: Rotation: "Rotate_0"
Jul 14 08:03:25 f-aspirev3771 kscreen_backend_launcher[10335]:
kscreen.xcb.helper: Size ID: 65535
Jul 14 08:03:25 f-aspirev3771 kscreen_backend_launcher[10335]:
kscreen.xcb.helper: Size: 2944 1080
Jul 14 08:03:25 f-aspirev3771 kscreen_backend_launcher[10335]:
kscreen.xcb.helper: SizeMM: 776 285
Jul 14 08:03:25 f-aspirev3771 kscreen_backend_launcher[10335]:
kscreen.xcb.helper: RRNotify_CrtcChange
Jul 14 08:03:25 f-aspirev3771 kscreen_backend_launcher[10335]:
kscreen.xcb.helper: Timestamp: 17933
Jul 14 08:03:25 f-aspirev3771 kscreen_backend_launcher[10335]:
kscreen.xcb.helper: CRTC: 155
Jul 14 08:03:25 f-aspirev3771 kscreen_backend_launcher[10335]:
kscreen.xcb.helper: Mode: 159
Jul 14 08:03:25 f-aspirev3771 kscreen_backend_launcher[10335]:
kscreen.xcb.helper: Rotation: "Rotate_0"
Jul 14 08:03:25 f-aspirev3771 kscreen_backend_launcher[10335]:
kscreen.xcb.helper: Geometry: 1920 0 1024 768
Jul 14 08:03:25 f-aspirev3771 kscreen_backend_launcher[10335]:
kscreen.xcb.helper: RRNotify_OutputChange
Jul 14 08:03:25 f-aspirev3771 kscreen_backend_launcher[10335]:
kscreen.xcb.helper: Timestamp: 17933
Jul 14 08:03:25 f-aspirev3771 kscreen_backend_launcher[10335]:
kscreen.xcb.helper: Output: 157
Jul 14 08:03:25 f-aspirev3771 kscreen_backend_launcher[10335]:
kscreen.xcb.helper: CRTC: 155
Jul 14 08:03:25 f-aspirev3771 kscreen_backend_launcher[10335]:
kscreen.xcb.helper: Mode: 159
Jul 14 08:03:25 f-aspirev3771 kscreen_backend_launcher[10335]:
kscreen.xcb.helper: Rotation: "Rotate_0"
Jul 14 08:03:25 f-aspirev3771 kscreen_backend_launcher[10335]:
kscreen.xcb.helper: Connection: "Connected"
Jul 14 08:03:25 f-aspirev3771 kscreen_backend_launcher[10335]:
kscreen.xcb.helper: Subpixel Order: 0
Jul 14 08:03:25 f-aspirev3771 kscreen_backend_launcher[10335]:
kscreen.xcb.helper: RRNotify_OutputChange
Jul 14 08:03:25 f-aspirev3771 kscreen_backend_launcher[10335]:
kscreen.xcb.helper: Timestamp: 6629437
Jul 14 08:03:25 f-aspirev3771 kscreen_backend_launcher[10335]:
kscreen.xcb.helper: Output: 65
Jul 14 08:03:25 f-aspirev3771 kscreen_backend_launcher[10335]:
kscreen.xcb.helper: CRTC: 62
Jul 14 08:03:25 f-aspirev3771 kscreen_backend_launcher[10335]:
kscreen.xcb.helper: Mode: 70
Jul 14 08:03:25 f-aspirev3771 kscreen_backend_launcher[10335]:
kscreen.xcb.helper: Rotation: "Rotate_0"
Jul 14 08:03:25 f-aspirev3771 kscreen_backend_launcher[10335]:
kscreen.xcb.helper: Connection: "Connected"
Jul 14 08:03:25 f-aspirev3771 kscreen_backend_launcher[10335]:
kscreen.xcb.helper: Subpixel Order: 1
Jul 14 08:03:25 f-aspirev3771 kscreen_backend_launcher[10335]:
kscreen.xcb.helper: RRNotify_OutputChange
Jul 14 08:03:25 f-aspirev3771 kscreen_backend_launcher[10335]:
kscreen.xcb.helper: Timestamp: 6629437
Jul 14 08:03:25 f-aspirev3771 kscreen_backend_launcher[10335]:
kscreen.xcb.helper: Output: 157
Jul 14 08:03:25 f-aspirev3771 kscreen_backend_launcher[10335]:
kscreen.xcb.helper: CRTC: 155
Jul 14 08:03:25 f-aspirev3771 kscreen_backend_launcher[10335]:
kscreen.xcb.helper: Mode: 159
Jul 14 08:03:25 f-aspirev3771 kscreen_backend_launcher[10335]:
kscreen.xcb.helper: Rotation: "Rotate_0"
Jul 14 08:03:25 f-aspirev3771 kscreen_backend_launcher[10335]:
kscreen.xcb.helper: Connection: "Connected"
Jul 14 08:03:25 f-aspirev3771 kscreen_backend_launcher[10335]:
kscreen.xcb.helper: Subpixel Order: 0
Jul 14 08:03:25 f-aspirev3771 kscreen_backend_launcher[10335]:
kscreen.xcb.helper: RRScreenChangeNotify
Jul 14 08:03:25 f-aspirev3771 kscreen_backend_launcher[10335]:
kscreen.xcb.helper: Timestamp: 6629437
Jul 14 08:03:25 f-aspirev3771 kscreen_backend_launcher[10335]:
kscreen.xcb.helper: Config_timestamp: 2143446
Jul 14 08:03:25 f-aspirev3771 kscreen_backend_launcher[10335]:
kscreen.xcb.helper: Window: 52428806
Jul 14 08:03:25 f-aspirev3771 kscreen_backend_launcher[10335]:
kscreen.xcb.helper: Root: 611
Jul 14 08:03:25 f-aspirev3771 kscreen_backend_launcher[10335]:
kscreen.xcb.helper: Rotation: "Rotate_0"
Jul 14 08:03:25 f-aspirev3771 kscreen_backend_launcher[10335]:
kscreen.xcb.helper: Size ID: 65535
Jul 14 08:03:25 f-aspirev3771 kscreen_backend_launcher[10335]:
kscreen.xcb.helper: Size: 2944 1080
Jul 14 08:03:25 f-aspirev3771 kscreen_backend_launcher[10335]:
kscreen.xcb.helper: SizeMM: 776 285
Jul 14 08:03:25 f-aspirev3771 kscreen_backend_launcher[10335]:
kscreen.xcb.helper: RRNotify_OutputChange
Jul 14 08:03:25 f-aspirev3771 kscreen_backend_launcher[10335]:
kscreen.xcb.helper: Timestamp: 6629437
Jul 14 08:03:25 f-aspirev3771 kscreen_backend_launcher[10335]:
kscreen.xcb.helper: Output: 65
Jul 14 08:03:25 f-aspirev3771 kscreen_backend_launcher[10335]:
kscreen.xcb.helper: CRTC: 62
Jul 14 08:03:25 f-aspirev3771 kscreen_backend_launcher[10335]:
kscreen.xcb.helper: Mode: 70
Jul 14 08:03:25 f-aspirev3771 kscreen_backend_launcher[10335]:
kscreen.xcb.helper: Rotation: "Rotate_0"
Jul 14 08:03:25 f-aspirev3771 kscreen_backend_launcher[10335]:
kscreen.xcb.helper: Connection: "Connected"
Jul 14 08:03:25 f-aspirev3771 kscreen_backend_launcher[10335]:
kscreen.xcb.helper: Subpixel Order: 1
Jul 14 08:03:25 f-aspirev3771 kscreen_backend_launcher[10335]:
kscreen.xcb.helper: RRNotify_OutputChange
Jul 14 08:03:25 f-aspirev3771 kscreen_backend_launcher[10335]:
kscreen.xcb.helper: Timestamp: 6629437
Jul 14 08:03:25 f-aspirev3771 kscreen_backend_launcher[10335]:
kscreen.xcb.helper: Output: 157
Jul 14 08:03:25 f-aspirev3771 kscreen_backend_launcher[10335]:
kscreen.xcb.helper: CRTC: 155
Jul 14 08:03:25 f-aspirev3771 kscreen_backend_launcher[10335]:
kscreen.xcb.helper: Mode: 159
Jul 14 08:03:25 f-aspirev3771 kscreen_backend_launcher[10335]:
kscreen.xcb.helper: Rotation: "Rotate_0"
Jul 14 08:03:25 f-aspirev3771 kscreen_backend_launcher[10335]:
kscreen.xcb.helper: Connection: "Connected"
Jul 14 08:03:25 f-aspirev3771 kscreen_backend_launcher[10335]:
kscreen.xcb.helper: Subpixel Order: 0
Jul 14 08:03:25 f-aspirev3771 kscreen_backend_launcher[10335]:
kscreen.xcb.helper: RRNotify_OutputChange
Jul 14 08:03:25 f-aspirev3771 kscreen_backend_launcher[10335]:
kscreen.xcb.helper: Timestamp: 6629437
Jul 14 08:03:25 f-aspirev3771 kscreen_backend_launcher[10335]:
kscreen.xcb.helper: Output: 157
Jul 14 08:03:25 f-aspirev3771 kscreen_backend_launcher[10335]:
kscreen.xcb.helper: CRTC: 155
Jul 14 08:03:25 f-aspirev3771 kscreen_backend_launcher[10335]:
kscreen.xcb.helper: Mode: 159
Jul 14 08:03:25 f-aspirev3771 kscreen_backend_launcher[10335]:
kscreen.xcb.helper: Rotation: "Rotate_0"
Jul 14 08:03:25 f-aspirev3771 kscreen_backend_launcher[10335]:
kscreen.xcb.helper: Connection: "Connected"
Jul 14 08:03:25 f-aspirev3771 kscreen_backend_launcher[10335]:
kscreen.xcb.helper: Subpixel Order: 0
Jul 14 08:03:25 f-aspirev3771 kscreen_backend_launcher[10335]:
kscreen.xcb.helper: RRScreenChangeNotify
Jul 14 08:03:25 f-aspirev3771 kscreen_backend_launcher[10335]:
kscreen.xcb.helper: Timestamp: 6629437
Jul 14 08:03:25 f-aspirev3771 kscreen_backend_launcher[10335]:
kscreen.xcb.helper: Config_timestamp: 2143446
Jul 14 08:03:25 f-aspirev3771 kscreen_backend_launcher[10335]:
kscreen.xcb.helper: Window: 52428806
Jul 14 08:03:25 f-aspirev3771 kscreen_backend_launcher[10335]:
kscreen.xcb.helper: Root: 611
Jul 14 08:03:25 f-aspirev3771 kscreen_backend_launcher[10335]:
kscreen.xcb.helper: Rotation: "Rotate_0"
Jul 14 08:03:25 f-aspirev3771 kscreen_backend_launcher[10335]:
kscreen.xcb.helper: Size ID: 65535
Jul 14 08:03:25 f-aspirev3771 kscreen_backend_launcher[10335]:
kscreen.xcb.helper: Size: 2944 1080
Jul 14 08:03:25 f-aspirev3771 kscreen_backend_launcher[10335]:
kscreen.xcb.helper: SizeMM: 776 285
Jul 14 08:03:25 f-aspirev3771 kscreen_backend_launcher[10335]:
kscreen.xcb.helper: RRNotify_OutputChange
Jul 14 08:03:25 f-aspirev3771 kscreen_backend_launcher[10335]:
kscreen.xcb.helper: Timestamp: 6629437
Jul 14 08:03:25 f-aspirev3771 kscreen_backend_launcher[10335]:
kscreen.xcb.helper: Output: 157
Jul 14 08:03:25 f-aspirev3771 kscreen_backend_launcher[10335]:
kscreen.xcb.helper: CRTC: 155
Jul 14 08:03:25 f-aspirev3771 kscreen_backend_launcher[10335]:
kscreen.xcb.helper: Mode: 159
Jul 14 08:03:25 f-aspirev3771 kscreen_backend_launcher[10335]:
kscreen.xcb.helper: Rotation: "Rotate_0"
Jul 14 08:03:25 f-aspirev3771 kscreen_backend_launcher[10335]:
kscreen.xcb.helper: Connection: "Connected"
Jul 14 08:03:25 f-aspirev3771 kscreen_backend_launcher[10335]:
kscreen.xcb.helper: Subpixel Order: 0
Jul 14 08:03:25 f-aspirev3771 kscreen_backend_launcher[10335]:
kscreen.xcb.helper: RRNotify_OutputProperty (ignored)
Jul 14 08:03:25 f-aspirev3771 kscreen_backend_launcher[10335]:
kscreen.xcb.helper: Timestamp: 6629488
Jul 14 08:03:25 f-aspirev3771 kscreen_backend_launcher[10335]:
kscreen.xcb.helper: Output: 65
Jul 14 08:03:25 f-aspirev3771 kscreen_backend_launcher[10335]:
kscreen.xcb.helper: Property: "_KDE_SCREEN_INDEX"
Jul 14 08:03:25 f-aspirev3771 kscreen_backend_launcher[10335]:
kscreen.xcb.helper: State (newValue, Deleted): 0
Jul 14 08:03:25 f-aspirev3771 kscreen_backend_launcher[10335]:
kscreen.xcb.helper: RRNotify_OutputProperty (ignored)
Jul 14 08:03:25 f-aspirev3771 kscreen_backend_launcher[10335]:
kscreen.xcb.helper: Timestamp: 6629488
Jul 14 08:03:25 f-aspirev3771 kscreen_backend_launcher[10335]:
kscreen.xcb.helper: Output: 65
Jul 14 08:03:25 f-aspirev3771 kscreen_backend_launcher[10335]:
kscreen.xcb.helper: Property: "_KDE_SCREEN_INDEX"
Jul 14 08:03:25 f-aspirev3771 kscreen_backend_launcher[10335]:
kscreen.xcb.helper: State (newValue, Deleted): 0
Jul 14 08:03:25 f-aspirev3771 kscreen_backend_launcher[10335]: kscreen.xrandr:
XRandRCrtc 155 m_configTimestamp update 0 => 17933
Jul 14 08:03:25 f-aspirev3771 kscreen_backend_launcher[10335]: kscreen.xrandr:
XRandROutput 157 update
Jul 14 08:03:25 f-aspirev3771 kscreen_backend_launcher[10335]:
m_connected: 0
Jul 14 08:03:25 f-aspirev3771 kscreen_backend_launcher[10335]: m_crtc
XRandRCrtc(0x58eec8941780)
Jul 14 08:03:25 f-aspirev3771 kscreen_backend_launcher[10335]: CRTC:
155
Jul 14 08:03:25 f-aspirev3771 kscreen_backend_launcher[10335]: MODE:
159
Jul 14 08:03:25 f-aspirev3771 kscreen_backend_launcher[10335]:
Connection: 0
Jul 14 08:03:25 f-aspirev3771 kscreen_backend_launcher[10335]: kscreen.xrandr:
Output 157 : connected = true , enabled = true
Jul 14 08:03:25 f-aspirev3771 kscreen_backend_launcher[10335]: kscreen.xrandr:
XRandROutput 157 update
Jul 14 08:03:25 f-aspirev3771 kscreen_backend_launcher[10335]:
m_connected: 0
Jul 14 08:03:25 f-aspirev3771 kscreen_backend_launcher[10335]: m_crtc
XRandRCrtc(0x58eec8941780)
Jul 14 08:03:25 f-aspirev3771 kscreen_backend_launcher[10335]: CRTC:
155
Jul 14 08:03:25 f-aspirev3771 kscreen_backend_launcher[10335]: MODE:
159
Jul 14 08:03:25 f-aspirev3771 kscreen_backend_launcher[10335]:
Connection: 0
Jul 14 08:03:25 f-aspirev3771 kscreen_backend_launcher[10335]: kscreen.xrandr:
Output 157 : connected = true , enabled = true
Jul 14 08:03:25 f-aspirev3771 kscreen_backend_launcher[10335]: kscreen.xrandr:
XRandROutput 65 update
Jul 14 08:03:25 f-aspirev3771 kscreen_backend_launcher[10335]:
m_connected: 0
Jul 14 08:03:25 f-aspirev3771 kscreen_backend_launcher[10335]: m_crtc
XRandRCrtc(0x58eec88873e0)
Jul 14 08:03:25 f-aspirev3771 kscreen_backend_launcher[10335]: CRTC: 62
Jul 14 08:03:25 f-aspirev3771 kscreen_backend_launcher[10335]: MODE: 70
Jul 14 08:03:25 f-aspirev3771 kscreen_backend_launcher[10335]:
Connection: 0
Jul 14 08:03:25 f-aspirev3771 kscreen_backend_launcher[10335]: kscreen.xrandr:
Output 65 : connected = true , enabled = true
Jul 14 08:03:25 f-aspirev3771 kscreen_backend_launcher[10335]: kscreen.xrandr:
XRandROutput 157 update
Jul 14 08:03:25 f-aspirev3771 kscreen_backend_launcher[10335]:
m_connected: 0
Jul 14 08:03:25 f-aspirev3771 kscreen_backend_launcher[10335]: m_crtc
XRandRCrtc(0x58eec8941780)
Jul 14 08:03:25 f-aspirev3771 kscreen_backend_launcher[10335]: CRTC:
155
Jul 14 08:03:25 f-aspirev3771 kscreen_backend_launcher[10335]: MODE:
159
Jul 14 08:03:25 f-aspirev3771 kscreen_backend_launcher[10335]:
Connection: 0
Jul 14 08:03:25 f-aspirev3771 kscreen_backend_launcher[10335]: kscreen.xrandr:
Output 157 : connected = true , enabled = true
Jul 14 08:03:25 f-aspirev3771 kscreen_backend_launcher[10335]: kscreen.xrandr:
XRandROutput 65 update
Jul 14 08:03:25 f-aspirev3771 kscreen_backend_launcher[10335]:
m_connected: 0
Jul 14 08:03:25 f-aspirev3771 kscreen_backend_launcher[10335]: m_crtc
XRandRCrtc(0x58eec88873e0)
Jul 14 08:03:25 f-aspirev3771 kscreen_backend_launcher[10335]: CRTC: 62
Jul 14 08:03:25 f-aspirev3771 kscreen_backend_launcher[10335]: MODE: 70
Jul 14 08:03:25 f-aspirev3771 kscreen_backend_launcher[10335]:
Connection: 0
Jul 14 08:03:25 f-aspirev3771 kscreen_backend_launcher[10335]: kscreen.xrandr:
Output 65 : connected = true , enabled = true
Jul 14 08:03:25 f-aspirev3771 kscreen_backend_launcher[10335]: kscreen.xrandr:
XRandROutput 157 update
Jul 14 08:03:25 f-aspirev3771 kscreen_backend_launcher[10335]:
m_connected: 0
Jul 14 08:03:25 f-aspirev3771 kscreen_backend_launcher[10335]: m_crtc
XRandRCrtc(0x58eec8941780)
Jul 14 08:03:25 f-aspirev3771 kscreen_backend_launcher[10335]: CRTC:
155
Jul 14 08:03:25 f-aspirev3771 kscreen_backend_launcher[10335]: MODE:
159
Jul 14 08:03:25 f-aspirev3771 kscreen_backend_launcher[10335]:
Connection: 0
Jul 14 08:03:25 f-aspirev3771 kscreen_backend_launcher[10335]: kscreen.xrandr:
Output 157 : connected = true , enabled = true
Jul 14 08:03:25 f-aspirev3771 kscreen_backend_launcher[10335]: kscreen.xrandr:
XRandROutput 157 update
Jul 14 08:03:25 f-aspirev3771 kscreen_backend_launcher[10335]:
m_connected: 0
Jul 14 08:03:25 f-aspirev3771 kscreen_backend_launcher[10335]: m_crtc
XRandRCrtc(0x58eec8941780)
Jul 14 08:03:25 f-aspirev3771 kscreen_backend_launcher[10335]: CRTC:
155
Jul 14 08:03:25 f-aspirev3771 kscreen_backend_launcher[10335]: MODE:
159
Jul 14 08:03:25 f-aspirev3771 kscreen_backend_launcher[10335]:
Connection: 0
Jul 14 08:03:25 f-aspirev3771 kscreen_backend_launcher[10335]: kscreen.xrandr:
Output 157 : connected = true , enabled = true
Jul 14 08:03:25 f-aspirev3771 kscreen_backend_launcher[10335]: kscreen.xrandr:
XRandROutput 157 update
Jul 14 08:03:25 f-aspirev3771 kscreen_backend_launcher[10335]:
m_connected: 0
Jul 14 08:03:25 f-aspirev3771 kscreen_backend_launcher[10335]: m_crtc
XRandRCrtc(0x58eec8941780)
Jul 14 08:03:25 f-aspirev3771 kscreen_backend_launcher[10335]: CRTC:
155
Jul 14 08:03:25 f-aspirev3771 kscreen_backend_launcher[10335]: MODE:
159
Jul 14 08:03:25 f-aspirev3771 kscreen_backend_launcher[10335]:
Connection: 0
Jul 14 08:03:25 f-aspirev3771 kscreen_backend_launcher[10335]: kscreen.xrandr:
Output 157 : connected = true , enabled = true
Jul 14 08:03:25 f-aspirev3771 kscreen_backend_launcher[10335]: kscreen.xrandr:
Emitting configChanged()
Disabling/enabling the plasma-kscreen.service appears to switch the bug
off/on:
"Fix" the bug by disabling the plasma-kscreen.service:
systemctl --user mask plasma-kscreen.service
With this workaround in place I can savely use lspci, xrandr, or open the
xscreensaver settings menu without the bug to occur. Meaning lspci, xrandr, etc
will trigger the GPU to go "active" for a brief moment and then it's back to
"suspended" again. Now the laptop stays cool.
The bug can be "unfixed":
systemctl --user unmask plasma-kscreen.service
This will undo the workaround and bring back the problems described above.
So I concluded I should report a specific package (libkscreen-bin):
apt list --installed | grep kscreen
-> libkscreen-bin/resolute,now 4:6.6.4-0ubuntu1 amd64
[installed,automatic]
dpkg -L libkscreen-bin
-> /usr/lib/systemd/user/plasma-kscreen.service
Here is more hardware info:
01:00.0 VGA compatible controller [0300]: NVIDIA Corporation GF108M [GeForce GT
620M/630M/635M/640M LE] [10de:0de9] (rev a1) (prog-if 00 [VGA controller])
Subsystem: Acer Incorporated [ALI] Device [1025:0686]
Flags: bus master, fast devsel, latency 0, IRQ 30
Memory at d2000000 (32-bit, non-prefetchable) [size=16M]
Memory at a0000000 (64-bit, prefetchable) [size=256M]
Memory at b0000000 (64-bit, prefetchable) [size=32M]
I/O ports at 4000 [size=128]
Expansion ROM at d3080000 [disabled] [size=512K]
Capabilities: [60] Power Management version 3
Capabilities: [68] MSI: Enable+ Count=1/1 Maskable- 64bit+
Capabilities: [78] Express Endpoint, IntMsgNum 0
Capabilities: [b4] Vendor Specific Information: Len=14 <?>
Capabilities: [100] Virtual Channel
Capabilities: [128] Power Budgeting <?>
Capabilities: [600] Vendor Specific Information: ID=0001 Rev=1 Len=024
<?>
Kernel driver in use: nouveau
Kernel modules: nvidiafb, nouveau
Thank you for reading my bug report
ProblemType: Bug
DistroRelease: Ubuntu 26.04
Package: libkscreen-bin 4:6.6.4-0ubuntu1
ProcVersionSignature: Ubuntu 7.0.0-27.27-generic 7.0.6
Uname: Linux 7.0.0-27-generic x86_64
ApportVersion: 2.34.0-0ubuntu2
Architecture: amd64
CasperMD5CheckResult: unknown
CurrentDesktop: LXQt
Date: Tue Jul 14 08:04:18 2026
InstallationDate: Installed on 2026-03-03 (133 days ago)
InstallationMedia: Lubuntu 24.04.3 LTS "Noble Numbat" - Release amd64
(20250805.1)
SourcePackage: libkscreen
UpgradeStatus: Upgraded to resolute on 2026-05-26 (49 days ago)
** Affects: libkscreen (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug package resolute
--
You received this bug notification because you are a member of Kubuntu
Bugs, which is subscribed to libkscreen in Ubuntu.
https://bugs.launchpad.net/bugs/2160593
Title:
plasma-kscreen.service appears to cause GPU to stay active, making the
laptop run increasingly hot
To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/libkscreen/+bug/2160593/+subscriptions
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