Status changed to 'Confirmed' because the bug affects multiple users.
** Changed in: linux (Ubuntu)
Status: New => Confirmed
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https://bugs.launchpad.net/bugs/2070146
Title:
Multi-seat freezes on resume for sleep in Kubuntu 24.04
Status in linux package in Ubuntu:
Confirmed
Bug description:
Hello
I have a fresh install of Kubuntu 24.04 and I am having problems
resuming from sleep. Here is the output of 'lsb_release -rd'.
Description: Ubuntu 24.04 LTS
Release: 24.04
My system is fully up to date as of today. I am very unsure which
package is the issue.
Steps to reproduce:
1. Set up multi-seat using loginctl. I have two seats set up with separate
graphics cards. One is an nvidia GT710 the other and onboard intel graphics
(i915 driver). For the nvidia graphics card I have tried the 470 drivers
installed using ubuntu-drivers and the nouveau driver and it makes no
difference.
2. Start up the sytem.
3. Send the system to sleep.
4. Press a key to resume from sleep.
5. What happens is that the screens come back on and for a fraction of a
second I can move the mouse pointer, then everything freezes completely. The
only think I can do from here is a hard reset.
6. I tried switching from sddm to lightdm and the behaviour is identical, so
I'm guessing it's not the display manager that's at fault.
What I expected to happen: normal resume from sleep.
I also have Mint 21.3 installed and it does not suffer this issue, so
I'm thinking it's not a hardware issue. I do wonder if it's an issue
with the kernel.
Far below are last few lines from running 'journalctl -o short-precise
-k -b -1'. I am no expert but it seems to me like there are no entries
after the suspend.
I did also notice that the system froze a few other times at less
predictable times since installing, but I'm not sure if that is
related or not.
Many thanks for your help!
Jun 23 17:56:48.914019 jamaggs-desktop kernel: nouveau 0000:01:00.0: DRM:
VRAM: 2048 MiB
Jun 23 17:56:48.914191 jamaggs-desktop kernel: nouveau 0000:01:00.0: DRM:
GART: 1048576 MiB
Jun 23 17:56:48.914393 jamaggs-desktop kernel: nouveau 0000:01:00.0: DRM:
TMDS table version 2.0
Jun 23 17:56:48.914591 jamaggs-desktop kernel: nouveau 0000:01:00.0: DRM: MM:
using COPY for buffer copies
Jun 23 17:56:48.914837 jamaggs-desktop kernel: usb 1-1.4.3: Found UVC 1.00
device Logitech Webcam C925e (046d:085b)
Jun 23 17:56:48.915090 jamaggs-desktop kernel: snd_hda_intel 0000:01:00.1:
bound 0000:01:00.0 (ops nv50_audio_component_bind_ops [nouveau])
Jun 23 17:56:48.916212 jamaggs-desktop kernel: [drm] Initialized nouveau
1.4.0 20120801 for 0000:01:00.0 on minor 0
Jun 23 17:56:48.990282 jamaggs-desktop kernel: fbcon: nouveaudrmfb (fb0) is
primary device
Jun 23 17:56:48.990371 jamaggs-desktop kernel: fbcon: Deferring console
take-over
Jun 23 17:56:48.990423 jamaggs-desktop kernel: nouveau 0000:01:00.0: [drm]
fb0: nouveaudrmfb frame buffer device
Jun 23 17:56:55.334208 jamaggs-desktop kernel: EXT4-fs (dm-1): mounted
filesystem 70b377ac-79e2-475c-b3f7-041db5044cfc r/w with ordered data mode.
Quota mode: none.
Jun 23 17:56:56.304205 jamaggs-desktop kernel: BTRFS: device fsid
f36513a1-4156-4a6d-8d4c-abb0d717d555 devid 1 transid 1253 /dev/mapper/IntBackup
scanned by mount (720)
Jun 23 17:56:56.304278 jamaggs-desktop kernel: BTRFS info (device dm-2):
first mount of filesystem f36513a1-4156-4a6d-8d4c-abb0d717d555
Jun 23 17:56:56.304303 jamaggs-desktop kernel: BTRFS info (device dm-2):
using crc32c (crc32c-intel) checksum algorithm
Jun 23 17:56:56.304332 jamaggs-desktop kernel: BTRFS info (device dm-2):
using free-space-tree
Jun 23 17:56:56.776213 jamaggs-desktop kernel: audit: type=1400
audit(1719161816.774:2): apparmor="STATUS" operation="profile_load"
profile="unconfined" name="QtWebEngineProcess" pid=764 comm="apparm>
Jun 23 17:56:56.776273 jamaggs-desktop kernel: audit: type=1400
audit(1719161816.774:3): apparmor="STATUS" operation="profile_load"
profile="unconfined" name=4D6F6E676F444220436F6D70617373 pid=763 co>
Jun 23 17:56:56.776290 jamaggs-desktop kernel: audit: type=1400
audit(1719161816.774:4): apparmor="STATUS" operation="profile_load"
profile="unconfined" name="Discord" pid=762 comm="apparmor_parser"
Jun 23 17:56:56.776304 jamaggs-desktop kernel: audit: type=1400
audit(1719161816.774:5): apparmor="STATUS" operation="profile_load"
profile="unconfined" name="1password" pid=761 comm="apparmor_parser"
Jun 23 17:56:56.777413 jamaggs-desktop kernel: audit: type=1400
audit(1719161816.775:6): apparmor="STATUS" operation="profile_load"
profile="unconfined" name="brave" pid=765 comm="apparmor_parser"
Jun 23 17:56:56.777443 jamaggs-desktop kernel: audit: type=1400
audit(1719161816.776:7): apparmor="STATUS" operation="profile_load"
profile="unconfined" name="busybox" pid=767 comm="apparmor_parser"
Jun 23 17:56:56.777477 jamaggs-desktop kernel: audit: type=1400
audit(1719161816.776:8): apparmor="STATUS" operation="profile_load"
profile="unconfined" name="buildah" pid=766 comm="apparmor_parser"
Jun 23 17:56:56.777499 jamaggs-desktop kernel: audit: type=1400
audit(1719161816.776:9): apparmor="STATUS" operation="profile_load"
profile="unconfined" name="cam" pid=768 comm="apparmor_parser"
Jun 23 17:56:56.779936 jamaggs-desktop kernel: audit: type=1400
audit(1719161816.777:10): apparmor="STATUS" operation="profile_load"
profile="unconfined" name="ch-checkns" pid=769 comm="apparmor_pars>
Jun 23 17:56:56.779973 jamaggs-desktop kernel: audit: type=1400
audit(1719161816.777:11): apparmor="STATUS" operation="profile_load"
profile="unconfined" name="ch-run" pid=770 comm="apparmor_parser"
Jun 23 17:57:07.172279 jamaggs-desktop kernel: kauditd_printk_skb: 115
callbacks suppressed
Jun 23 17:57:07.172352 jamaggs-desktop kernel: audit: type=1400
audit(1719161827.170:127): apparmor="STATUS" operation="profile_replace"
info="same as current profile, skipping" profile="unconfined" >
Jun 23 17:57:07.259215 jamaggs-desktop kernel: NET: Registered PF_QIPCRTR
protocol family
Jun 23 17:57:07.585216 jamaggs-desktop systemd-fstab-generator[1070]: Mount
point none is not a valid path, ignoring.
Jun 23 17:57:08.189210 jamaggs-desktop kernel: fbcon: Taking over console
Jun 23 17:57:08.205109 jamaggs-desktop kernel: Console: switching to colour
frame buffer device 320x67
Jun 23 17:57:08.418276 jamaggs-desktop kernel: audit: type=1400
audit(1719161828.416:128): apparmor="DENIED" operation="capable" class="cap"
profile="/usr/sbin/cupsd" pid=1082 comm="cupsd" capability>
Jun 23 17:57:11.581356 jamaggs-desktop kernel: e1000e 0000:00:19.0 eno1: NIC
Link is Up 1000 Mbps Full Duplex, Flow Control: None
Jun 23 17:57:12.132714 jamaggs-desktop kernel: audit: type=1400
audit(1719161832.129:129): apparmor="DENIED" operation="capable" class="cap"
profile="/usr/sbin/cupsd" pid=1183 comm="serial" capabilit>
Jun 23 17:57:12.160355 jamaggs-desktop kernel: usblp3: removed
Jun 23 17:57:12.162305 jamaggs-desktop kernel: usblp 1-1.6:1.0: usblp3: USB
Bidirectional printer dev 6 if 0 alt 0 proto 2 vid 0x03F0 pid 0x2C17
Jun 23 17:57:20.849222 jamaggs-desktop kernel: usb 1-1.4.3: reset high-speed
USB device number 10 using ehci-pci
Jun 23 17:57:27.000222 jamaggs-desktop kernel: PM: suspend entry (deep)
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