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change video driver

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  change video driver "mick.crane" <mick.crane@gmail.com> - 2024-07-07 10:40 +0200
    Re: change video driver "mick.crane" <mick.crane@gmail.com> - 2024-07-10 08:10 +0200

#270904 — change video driver

On [cough] Trixie, just how do I change the video driver.
I'm using  driver xserver-xorg-video-nvidia-tesla-470 on older kernel
There must have been a reason, likely the available resolution.
With kernel 6.9.7-amd64 have to "startx" and then the available displays 
in Xfce are low.
"modprobe nvidia" complains cannot find the module.
I revert to 6.7.12 kernel
Do I need to "apt remove" the xserver-xorg-video-nvidia-tesla-470,
Reboot to the 6.9.7-amd64 kernel and reinstall the tesla-470 driver?
Find the /lib/modules/6.7.12 nvidia-tesla-470 module and copy it to
/lib/modules/6.9.7-amd64 ?
What files would I want to find?

mick

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#270993

On 2024-07-07 09:36, mick.crane wrote:
> On [cough] Trixie, just how do I change the video driver.
> I'm using  driver xserver-xorg-video-nvidia-tesla-470 on older kernel
> There must have been a reason, likely the available resolution.
> With kernel 6.9.7-amd64 have to "startx" and then the available
> displays in Xfce are low.
> "modprobe nvidia" complains cannot find the module.
> I revert to 6.7.12 kernel
> Do I need to "apt remove" the xserver-xorg-video-nvidia-tesla-470,
> Reboot to the 6.9.7-amd64 kernel and reinstall the tesla-470 driver?
> Find the /lib/modules/6.7.12 nvidia-tesla-470 module and copy it to
> /lib/modules/6.9.7-amd64 ?
> What files would I want to find?
> 
booting 6.7.12 kernel
"apt remove xserver-xorg-video-nvidia-tesla-470"
reboot to 6.9.7 kernel and
"apt install xserver-xorg-video-nvidia-tesla-470"
doesn't work, "startx" is low resolution as it reverts to the mesa or 
nouveau driver.
I did this remove/install because I thought the nvidia module would be 
in the directory of /usr/lib/modules/<kernel-version>
and maybe it couldn't find it but it seems to be in /usr/lib/nvidia.
installing the xserver-xorg-video-nvidia-tesla-470 driver with the 6.9.7 
kernel
there is a message that link group glx is broken and on reboot
something flashes by that systemd failed to load the module.
I've no idea what to type to fix whatever is failing so I guess I stay 
with the 6.7.12 kernel.

mick

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