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#1 2024-07-03 23:38:36

Max_UA
Member
Registered: 2023-09-13
Posts: 4

HP 8570w internal display not detected nouveau

Hello.

I have an HP 8570w laptop with an nVIDIA quadro k2000M. This is the only gpu in the laptop which drives all displays including the internal one, the intel gpu is disabled in hardware. When using nouveau, shortly after the system boots and passes grub the backlight on the internal display goes black and the only display output detected by xrandr is any external monitors I plug in. My particular machine has the dreamcolor panel, which is 1080p 10 bit and connects over eDP to the gpu instead of LVDS like all the other panel options for this machine.

I did find these lines in dmesg:

[    8.947767] nouveau 0000:01:00.0: vgaarb: deactivate vga console
[    8.947916] nouveau 0000:01:00.0: NVIDIA GK107 (0e73b0a2)
[    9.023609] nouveau 0000:01:00.0: bios: version 80.07.40.00.02
[    9.024065] nouveau 0000:01:00.0: mxm: BIOS version 3.0
[    9.024587] nouveau 0000:01:00.0: volt: Type mismatch between the voltage table type and the GPIO table. Fallback to GPIO mode.
[    9.025222] nouveau 0000:01:00.0: fb: 2048 MiB DDR3
[    9.100769] nouveau 0000:01:00.0: DRM: VRAM: 2048 MiB
[    9.100775] nouveau 0000:01:00.0: DRM: GART: 1048576 MiB
[    9.100778] nouveau 0000:01:00.0: DRM: TMDS table version 2.0
[    9.102187] nouveau 0000:01:00.0: DRM: MM: using COPY for buffer copies
[    9.103469] snd_hda_intel 0000:01:00.1: bound 0000:01:00.0 (ops nv50_audio_component_bind_ops [nouveau])
[    9.427740] nouveau 0000:01:00.0: DRM: DDC responded, but no EDID for eDP-1
[    9.427959] [drm] Initialized nouveau 1.4.0 20120801 for 0000:01:00.0 on minor 0
[    9.433963] nouveau 0000:01:00.0: DRM: DDC responded, but no EDID for eDP-1
[    9.490138] fbcon: nouveaudrmfb (fb0) is primary device
[    9.804414] nouveau 0000:01:00.0: [drm] fb0: nouveaudrmfb frame buffer device

and it seems like the issue is that nouveau cannot read the EDID of the internal panel. However I don't not know if I should go straight to trying an EDID override because it seems quite complicated, so I figured I would ask here first.

By the way, the display does work when using nvidia 470xx propriotary drivers, however I want to switch away from them till I upgrade the gpu so that I can run kde wayland. 470xx doesn't really support wayland, while nouveau does.

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