Bug#765726: VGA misdetection and freeze

[Andreas Beckmann]

On 2014-10-20 20:11, Beck, Andre wrote:
> Martin, you may actually *have* a working gdm3 login, you just don't
> see it. It's been the same here with kdm, the login window of which
> is displayed on a nonexisting screen. The reason for that is the blob
> seems to misdetect the VGA port (I'm just citing from your mail):
> 
>> [   184.150] (--) NVIDIA(0):     LGD (CRT-0) (connected)
>> [   184.150] (--) NVIDIA(0):     LGD (DFP-0) (boot, connected)
> 
> This results in a bogus metamode:
> 
>> [   184.151] (II) NVIDIA(0): Validated MetaModes:
>> [   184.151] (II) NVIDIA(0): "DFP-0:nvidia-auto-select,CRT-0:nvidia-auto-select"
>> [   184.151] (II) NVIDIA(0): Virtual screen size determined to be 3840 x 1080
> 
> Given that metamode, the result is an offset nVidia Logo (which you would
> have seen hadn't you disabled it ;) - and the login window on the wrong
> part of that virtual screen.

Good catch!

anyway, there is a 343.22 driver (soon) in experimental

something else you could try is to edit conftest.h in the dkms source
directory and disable the line defining NV_DRM_AVAILABLE
as that got ctivated in 340.46

and please file bug reports with nvidia


Andreas