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NixOS KDE

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24 May 2026
@k900:0upti.meK900I believe at least some of the NVK-on-older-hardware work has been funded by Valve via Collabora10:58:37
@aloisw:kde.orgaloisw Unfortunately for pre-Turing the nouveau kernel driver is not really a realistic option due to the power management situation: depending on the machine configuration the card will be either in the lowest state (slow) or in a higher one (hot) permamently (there are apparently some workarounds for Kepler and early Maxwell but not sure how well they work). So you need various legacy versions of the proprietary driver which really only support X11 (I think some of them did support Wayland without GBM but no compositor I'm aware of still does). 11:12:55
@k900:0upti.meK900 Wasn't someone working on power management for those too? 11:24:56
@k900:0upti.meK900On the kernel side11:25:08
@aloisw:kde.orgaloisw Not that I'm aware of. The only things I could find is for Pascal Tegras (https://lists.freedesktop.org/archives/nouveau/2025-August/048609.html) and for newer Maxwell (https://lists.freedesktop.org/archives/nouveau/2017-September/028848.html) but without fan support. 11:36:36
@aloisw:kde.orgaloisw (and of course everything is still manual) 11:37:24
26 May 2026
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@jee_mj:matrix.orgmjRedacted or Malformed Event19:56:23
27 May 2026
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28 May 2026
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@k900:0upti.meK900Dayum15:16:32
@k900:0upti.meK900The 6.7 wallpaper is sick15:16:37
@k900:0upti.meK900Also you can now just enable Union in the style settings15:21:04
31 May 2026
@qweered_real:matrix.orgAliaksandr set a profile picture.00:31:03
@aktaboot:tchncs.deaktaboot (nvidia, 🖕 u)

I'm hitting an issue that seems to be kwin related but i'm not 100% positive.
Sometimes my external monitor just doesnt seem to receive any signal and i get kwin_wayland[2815]: Failed to open drm device in the kwin logs

  • the monitor goes to sleep after initially getting woken
  • I see the monitor in Display Configuration and can enable/disable it etc.
  • If I switch to a different tty, it does wake up and mirror the other monitor, as expected
  • kernel logs dont show any warnings relating to drm or amdgpu

Any ideas how i can debug this further?

06:19:32
@k900:0upti.meK900Is it a separate GPU or just wired to the integrated?06:20:14
@aktaboot:tchncs.deaktaboot (nvidia, 🖕 u)the issue either happens initially or doesn't (only reboot fixes it it seems)06:20:17
@aktaboot:tchncs.deaktaboot (nvidia, 🖕 u)integrated06:20:27
@k900:0upti.meK900 Does kscreen-doctor list it when it's dead? 06:20:28
@aktaboot:tchncs.deaktaboot (nvidia, 🖕 u)yeah i can enable it with kscreen doctor and everything06:20:50
@k900:0upti.meK900The "failed to open drm device" is probably a red herring then06:20:52
@k900:0upti.meK900 But still no signal even if it's reenabled? 06:21:05
@aktaboot:tchncs.deaktaboot (nvidia, 🖕 u)yeah ...06:21:11
@k900:0upti.meK900Try a different cable?06:21:24
@k900:0upti.meK900It could just be failing to negotiate the link settings properly06:21:31
@k900:0upti.meK900Actually, also, HDMI or DP?06:21:37
@aktaboot:tchncs.deaktaboot (nvidia, 🖕 u)DP! but also through a Dock06:22:29
@k900:0upti.meK900Try a direct connection?06:22:43

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