Re: Nvidia Optimus, Debian 10, and Firefox ESR crashes

["Alexander V. Makartsev" <avbetev@gmail.com>]

On 05.01.2021 08:47, David Christensen wrote:

> On
>       2021-01-04 09:14, Alexander V. Makartsev wrote:
>       
> > "xrandr" utility should help you with
> >         diagnostics and setup:
> >         
> >              $ xrandr -q
> >         
> >       
>       
>       Thank you for the reply.  :-)
>       
>       
>       
>       2021-01-04 19:22:57 root@dipsy ~
>       
>       # xrandr -q
>       
>       Can't open display
>       
>       
>     
    You have to run it as a normal user, hence a "$" sign.
    
> Note
>       pop-up:
>       
>       
>        ┌────────────────────┤ Configuring nvidia-legacy-check
>       ├────────────────────┐
>       
>       
>       
>       Choose 'No'.
>       
>     
    As I previously explained, you'll have to install legacy driver
    version 390 for your VGA to work.
    This will be true for any other additional packages that are part of
    Nvidia drivers.
    So in order to get "nvidia-settings" utility that supports your VGA,
    you have to install "nvidia-settings-legacy-390xx" package.
    
> And
>       a new issue:
>       
>       
>       Xfce -> Settings -> Display -> Resolution now only offers
>       three choices:
>       
>       
>       1024x768
>       
>       800x600
>       
>       640x480
>       
>       
>       
>       The laptop has a 1920x1080 screen.  The external monitor is
>       1920x1080. The nouveau driver was able to drive both the laptop
>       display and the external monitor at 1920x1080.  I would like to do
>       so with the non-free Nvidia legacy driver.
>       
>       
>     
    I think somehow nvidia driver fails to process EDID information of
    your monitor and laptop screen. Also Optimus doesn't make things
    easier.
    This is what I get with default settings (no special kernel command
    line parameters) on my system:
    $ xrandr -q
      Screen 0: minimum 8 x 8, current 1680 x 1050, maximum 32767 x
      32767
      DVI-D-0 connected 1680x1050+0+0 (normal left inverted right x axis
      y axis) 474mm x 296mm
         1680x1050     59.88*+  59.95  
         1280x1024     75.02    60.02  
         1280x960      60.00  
         1152x864      75.00  
         1024x768      75.03    70.07    60.00  
         800x600       75.00    72.19    60.32    56.25  
         640x480       75.00    72.81    59.94  
      HDMI-0 disconnected (normal left inverted right x axis y axis)
      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)
    
> Looking
>       around for X configuration files:
>       
>       
>       2021-01-04 19:34:58 root@dipsy ~
>       
>       # locate xorg.conf
>       
>       /usr/share/X11/xorg.conf.d
>       
>       /usr/share/X11/xorg.conf.d/10-amdgpu.conf
>       
>       /usr/share/X11/xorg.conf.d/10-quirks.conf
>       
>       /usr/share/X11/xorg.conf.d/10-radeon.conf
>       
>       /usr/share/X11/xorg.conf.d/40-libinput.conf
>       
>       /usr/share/X11/xorg.conf.d/70-wacom.conf
>       
>       /usr/share/X11/xorg.conf.d/nvidia-drm-outputclass.conf
>       
>       
>       RTFM xorg.conf(5), I am unsure if any of the located files (above)
>       are active:
>       
>     
    They are active, but those files are default config snippets. I have
    them on my system too.
    Usually, "/etc/X11/xorg.conf" and "/etc/X11/xorg.conf.d/" is the
    place for X configs and snippets of X configs.
    
    It would be helpful if you collect output from utilities I mentioned
    before.
    Try "nvidia-settings" (not as root :), because it has ability to
    detect screens and generate Xorg config. [1]
    I've just now found a very detailed configuration manual from Nvidia
    [2], that explains why monitors could not be detected properly (See
    a warning section for "ConnectedMonitor"
    option).
    
    [1]
https://zuttobenkyou.wordpress.com/2009/10/04/linux-nvidia-xinerama-guide-rotating-just-one-monitor-in-a-dual-head-setup/
    [2]
https://download.nvidia.com/XFree86/Linux-x86_64/390.138/README/configtwinview.html
    
-- 
With kindest regards, Alexander.

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