Re: trixie recent update causing video instability

D. R. Evans wrote on 6/29/26 8:44 AM:
> Following a normal trixie update two or three weeks ago, I have found that I
> have to reboot my main desktop machine every few days because the video
> becomes increasingly riddled with unwelcome artefacts as I use the system. The
> artefacts seem to be triggered, or at least made much worse, after watching
> youtube videos or using Google Streetview (in Firefox).

I can confirm that the problem exists even without viewing videos, but then 
it's much less obvious (i.e., almost everything looks just fine; but I've 
discovered that if I go to log out, for example, then the logout screen is 
garbled). Everything gets much worse much more quickly if I try to view videos 
or use Streetview (the latter sometimes causes a complete freeze of the 
system, requiring a hard reset).

So something definitely seems to be wrong in video-driver-land.

> 
> Output from inxi:
> 
> ----
> 
> [ZB:tmp] inxi -SGaz
> System:
>     Kernel: 6.12.94+deb13-amd64 arch: x86_64 bits: 64 compiler: gcc v: 14.2.0
>       clocksource: tsc avail: hpet,acpi_pm
>       parameters: BOOT_IMAGE=/BOOT/debian@/vmlinuz-6.12.94+deb13-amd64
>       root=ZFS=rpool/ROOT/debian ro root=ZFS=rpool/ROOT/debian
>     Desktop: TDE (Trinity) v: R14.1.7~[DEVELOPMENT] tk: Qt v: 3.5.0 wm: Twin
>       v: 3.0 with: kicker tools: avail: i3lock,slock,xss-lock vt: 7 dm: 1: LightDM
>       v: 1.32.0 2: SDDM note: stopped Distro: Debian GNU/Linux 13 (trixie)
> Graphics:
>     Device-1: NVIDIA GF108 [GeForce GT 430] vendor: Gigabyte driver: nouveau
>       v: kernel non-free: series: 390.xx+ status: legacy (EOL~2022-11-22) last:
>       release: 390.157 kernel: 6.0 xorg: 1.21 arch: Fermi code: GF1xx
>       process: 40/28nm built: 2010-2016 pcie: gen: 1 speed: 2.5 GT/s lanes: 16
>       ports: active: HDMI-A-1 empty: DVI-I-1,VGA-1 bus-ID: 04:00.0
>       chip-ID: 10de:0de1 class-ID: 0300
>     Display: x11 server: X.Org v: 21.1.16 with: Xwayland v: 24.1.6
>       compositor: Twin v: 3.0 driver: X: loaded: modesetting dri: nouveau
>       gpu: nouveau display-ID: :0 screens: 1
>     Screen-1: 0 s-res: 1920x1080 s-dpi: 96 s-size: 508x285mm (20.00x11.22")
>       s-diag: 582mm (22.93")
>     Monitor-1: HDMI-A-1 mapped: HDMI-1 model: VGA TO HDMI built: 2013 res:
>       mode: 1920x1080 hz: 60 scale: 100% (1) dpi: 96 gamma: 1.2
>       size: 509x286mm (20.04x11.26") diag: 584mm (23") ratio: 16:9 modes:
>       max: 1920x1080 min: 640x480
>     API: EGL v: 1.5 hw: drv: nvidia nouveau platforms: device: 0 drv: nouveau
>       device: 1 drv: swrast gbm: drv: nouveau surfaceless: drv: nouveau x11:
>       drv: nouveau inactive: wayland
>     API: OpenGL v: 4.5 compat-v: 4.3 vendor: mesa v: 25.0.7-2 glx-v: 1.4
>       direct-render: yes renderer: NVC1 device-ID: 10de:0de1 memory: 991.2 MiB
>       unified: no
>     API: Vulkan v: 1.4.309 layers: 3 device: 0 type: cpu name: llvmpipe (LLVM
>       19.1.7 256 bits) driver: mesa llvmpipe v: 25.0.7-2 (LLVM 19.1.7)
>       device-ID: 10005:0000 surfaces: xcb,xlib
>     Info: Tools: api: clinfo, eglinfo, glxinfo, vulkaninfo
>       de: kscreen-console,kscreen-doctor wl: wayland-info x11: xdriinfo,
>       xdpyinfo, xprop, xrandr
> [ZB:tmp]
> 
> ----
> 

If someone needs more info from the system in order to try to figure out how 
to fix the problem, please just ask me for it.

   Doc