https://bugs.kde.org/show_bug.cgi?id=507343
--- Comment #3 from zero <zero.city...@passinbox.com> --- Follow up: As this problem is way out of my league knowledge wise, I tried diagnosing with ChatGPT. What didnt work: - Using different kernel (tested 6.15.7-1, 6.12.39-1) - Kernel param: amdgpu.dc=0 - Kernel param: amdgpu_hotplug.dc=0 This led me to: $ udevadm monitor --subsystem-match=drm KERNEL[3864.424231] change /devices/pci0000:00/0000:00:01.0/0000:01:00.0/0000:02:00.0/0000:03:00.0/drm/card1 (drm) UDEV [3864.432087] change /devices/pci0000:00/0000:00:01.0/0000:01:00.0/0000:02:00.0/0000:03:00.0/drm/card1 (drm) KERNEL[3867.922168] change /devices/pci0000:00/0000:00:01.0/0000:01:00.0/0000:02:00.0/0000:03:00.0/drm/card1 (drm) UDEV [3867.931875] change /devices/pci0000:00/0000:00:01.0/0000:01:00.0/0000:02:00.0/0000:03:00.0/drm/card1 (drm) Turned on debugging temporarily, letting the monitor sleep and wake(by itself) showed me this; $ sudo dmesg -w | grep hotplug [ 1512.751780] amdgpu 0000:03:00.0: [drm:drm_sysfs_connector_hotplug_event] [CONNECTOR:101:DP-2] generating connector hotplug event [ 1512.751833] amdgpu 0000:03:00.0: [drm:drm_client_dev_hotplug] fbdev: ret=0 [ 1516.397131] amdgpu 0000:03:00.0: [drm:drm_sysfs_connector_hotplug_event] [CONNECTOR:101:DP-2] generating connector hotplug event [ 1516.397177] amdgpu 0000:03:00.0: [drm:drm_client_dev_hotplug] fbdev: ret=0 So this was tracked down to being a hotplug event triggering the monitor to wake again, and (according to ChatGPT) causes the DPMS idle timer to no be tracked anymore/broken after that. Bug report for this issue: https://gitlab.freedesktop.org/drm/amd/-/issues/662 --- After messing with a lot of stuff the waking is no longer occurring. I have no idea what I did that "fixed" it for me thats the annoying part. My current settings/what I've changed since this bug report: - Boot/grub.cfg: Removed kernel params for iommu(on manjaro system) - Monitor: Enter standby in 60 seconds (previously this was set to 30 seconds) - Monitor: VRR: On - Monitor sleep timer: 30 mins (probably unrelated but mentioning it anyways) - KDE: Adaptive Sync: Always - KDE: Refresh rate: 175Hz - KDE: Lock screen automatically: Never - KDE: Dim screen auto: Never - KDE: Turn off screen: 30s -- You are receiving this mail because: You are watching all bug changes.
