Bug#770798: xserver-xorg-video-nvidia: Driver wrongly detects that a monitor is attached to VGA-0

[Vincent Cheng]

Control: tag -1 + moreinfo

Hi Dominique,

On Sun, Nov 23, 2014 at 1:05 PM, Dominique Dumont <dod at debian.org> wrote:
> Package: xserver-xorg-video-nvidia
> Version: 340.46-5
> Severity: normal
>
> Dear Maintainer,
>
> With nvidia 340.46, the driver detects that a monitor is connected
> to VGA-0 even though there's no monitor connected to my laptop. V
>
> The laptop screen is configured (one can see the kde background
> image), and the login credential are shown on VGA-0.
>
> Since there's no monitor connected, I need to enter my credential
> without visual feedback: hit tab, enter login, hit tab, enter password
> and hit enter. This is rather cumbersome...
>
> Here's xrandr output:
>
> $ xrandr
> Screen 0: minimum 8 x 8, current 1920 x 1080, maximum 16384 x 16384
> VGA-0 connected primary 1920x1080+0+0 (normal left inverted right x axis y axis) 345mm x 194mm
>    1920x1080     59.93*+
> LVDS-0 connected 1920x1080+0+0 (normal left inverted right x axis y axis) 345mm x 194mm
>    1920x1080     59.93*+
> DP-0 disconnected (normal left inverted right x axis y axis)
> DP-1 disconnected (normal left inverted right x axis y axis)
> DP-2 disconnected (normal left inverted right x axis y axis)
> DP-3 disconnected (normal left inverted right x axis y axis)
> DP-4 disconnected (normal left inverted right x axis y axis)
> DP-5 disconnected (normal left inverted right x axis y axis)
> DP-6 disconnected (normal left inverted right x axis y axis)
>
> I confirm that there's no screen connected on VGA-0...
>
> This bug occurs with nvidia 340.46.
>
> Older version like 340.32 or version 343.22 from experimental do not
> show this problem.
>
> Feel free to re-assign this bug to any other nvidia package if this
> does not concern this package.

Can you try out 340.58 to see if this bug is fixed for you in a newer
340.xx release? Andreas has uploaded some packages for people to try
if they want to use 340.58, see [1] for details.

Regards,
Vincent

[1] https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=761360#39