[arch-general] Broke Arch trying to change graphics driver

[mar77i at protonmail.ch]

> When I tried "sudo modprobe nvidia" I got an "exec format error"
> message and the nvidia module refused to load.

You need to build your driver for each kernel separately. That's why you can get [0] as a package.

cheers!
mar77i

[0] https://www.archlinux.org/packages/testing/x86_64/nvidia-dkms/


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‐‐‐‐‐‐‐ Original Message ‐‐‐‐‐‐‐

On May 5, 2018 7:01 AM, Junayeed Ahnaf via arch-general <arch-general at archlinux.org> wrote:

> I did a rollback too , seems like there's no easy way to go back from nonfree to free drivers.
> 
> On May 5 2018, at 12:00 am, Eric Blau eblau at eblau.com wrote:
> 
> On Fri, May 4, 2018 at 1:34 PM Junayeed Ahnaf via arch-general <
> 
> arch-general at archlinux.org> wrote:
> 
> So here's what happened, I was facing issue with proprietary nVidia driver
> 
> (screen tearing) so I thought I want to switch to the free one, so I
> 
> uninstalled nvidia with "pacman -Rs nvidia" , then I thought might as well
> 
> try a different kernel and installed zen. Now when I boot into either
> 
> kernel I am seeing "Starting display manager" then a black screen. I can
> 
> login to tty2 , but no display comes up.
> 
> I want to switch back to free driver, with preferably zen kernel. What
> 
> should I do? Thanks in advance.
> 
> I just hit a similar issue when trying to switch from nvidia to nouveau. I
> 
> was trying to switch from i3/Xorg to sway/Wayland. The proprietary nvidia
> 
> driver is unsupported with sway. I uninstalled the nvidia modules like you
> 
> did, disabled the lightdm display manager, and booted into nouveau. It
> 
> worked but was much too slow to be usable with my 4K display. I was getting
> 
> major lag. It was like getting 1 HZ refresh rate moving my mouse pointer
> 
> around.
> 
> I switched back to i3/Xorg with the nvidia modules but when rebooting to
> 
> 
> The nvidia module installed to the extramodules directory so I expected it
> 
> to work with the 4.16.4 kernel I'm running even though it was built on
> 
> 4.16.1, but apparently that is not the case. Uninstalling and reinstalling
> 
> nvidia and nvidia-utils did not fix things.
> 
> Eventually I gave up and did a "zfs rollback" to restore the previous
> 
> system state and everything was fine after that. Sorry I don't have good
> 
> solution for you, but I wanted to chime in that I also encountered the same
> 
> problem and it was related to the nvidia modules not being loadable.
> 
> Regards,
> 
> Eric