Bug#971532: nvidia-graphics-drivers: Blank screen with just the mouse with sddm

[Leopold Palomo-Avellaneda]

Package: nvidia-graphics-drivers
Severity: normal

Dear Maintainer,


I'm having problems with the nvidia-graphics driver. I'm using 450.66-1~bpo10+1 
and it has been tested with linux-image-4.19.0-11-amd64 and 
linux-image-5.7.0-0.bpo.2-amd64.

With all the test test that I have done the result has been the same. When sddm 
load, a black screen in showed and the cursor, nothing more. However, with 
nouveau the works.

Checking /var/log/Xorg.0.log what I have found interesting is this:
...
  (EE) Failed to open authorization file 
"/var/run/sddm/{4f23d2f5-babb-4b65-bbfd-ba06776ed6cb}": No such file or directory
...

Surfing on the web what I have found is that is something related with drm and 
the nvidia driver, but although I have forced with nvidia-drm.modeset=1 I don't 
have found any different result.

Any idea of what is failing here?

Leopold


-- System Information:
Debian Release: 10.6
   APT prefers stable-updates
   APT policy: (500, 'stable-updates'), (500, 'stable')
Architecture: amd64 (x86_64)

Kernel: Linux 5.7.0-0.bpo.2-amd64 (SMP w/8 CPU cores)
Kernel taint flags: TAINT_PROPRIETARY_MODULE, TAINT_OOT_MODULE, 
TAINT_UNSIGNED_MODULE
Locale: LANG=ca_ES.UTF-8, LC_CTYPE=ca_ES.UTF-8 (charmap=UTF-8), 
LANGUAGE=ca_ES.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)
LSM: AppArmor: enabled

-- 
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Linux User 152692     GPG: 05F4A7A949A2D9AA
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