[SOLVED] Choppy Graphics using akmod

[RX3R0]

I am a relatively new Linux user in need of help.

I've been using Fedora since F14 and I usually install the kmod nvidia drivers. Normally, there are no problems with it at all. A few months ago, I install F16, but did not bother to install the kmod drivers because I felt satisfied with the default (nouveau) drivers.

A few hours ago I installed the akmod drivers because of issues with WebGL in Chrome using these instructions.
http://www.if-not-true-then-false.co...ouveau-driver/

The installation went perfectly fine and WebGL seems to be working fine as well.

The problem is that some of the animations that were usually smooth, such as viewing running/open programs in dashboard like interface (when you press the Windows/Super key), are now very choppy. Everything else appears to be relatively OK, though not quite as smooth as with the default drivers.

Is there any way to safely uninstall akmod and revert to the default drivers without having to reinstall Fedora 16?

Thank you very much in advance for your help.

PS: Output from lspci | grep -i VGA
00:0d.0 VGA compatible controller: nVidia Corporation C61 [GeForce 7025 / nForce 630a] (rev a2)

[sonoran]

If you made any changes to the kernel command line in /etc/default/grub for the akmod driver, undo those changes. Then run, as root:

# rm /boot/initramfs-$(uname -r).img
# mv /boot/initramfs-$(uname -r)-nouveau.img /boot/initramfs-$(uname -r).img

Nouveau should take over when you reboot. Then you can uninstall the akmod packages.

[RX3R0]

@sonoran

That is similar to an idea that I had earlier. Basically, the idea was to do the reverse of the instructions to get back to how it was before I installed akmod. There is a slight problem though. You said I need to undo changes to /etc/default/grub. I know that changes were made to that file during the akmod install, but I'm not entirely sure what changes were made. I also don't know what the file looked like before any changes were made.

Here's what the file looks like now:

GRUB_TIMEOUT=5
GRUB_DISTRIBUTOR="Fedora"
GRUB_DEFAULT=saved
GRUB_CMDLINE_LINUX="rd.md=0 rd.lvm=0 rd.dm=0  KEYTABLE=us quiet SYSFONT=latarcyrheb-sun16 rhgb rd.luks=0 LANG=en_US.UTF-8"

[sonoran]

Originally Posted by RX3R0

Basically, the idea was to do the reverse of the instructions to get back to how it was before I installed akmod.

Yep, that's the idea.

There is a slight problem though. You said I need to undo changes to /etc/default/grub. I know that changes were made to that file during the akmod install, but I'm not entirely sure what changes were made. I also don't know what the file looked like before any changes were made.

Your kernel line looks okay. I was thinking of "rdblacklist=nouveau" which sometimes must be added to keep nouveau from being loaded.

One possible problem is a missing "/boot/initramfs-$(uname -r)-nouveau.img" file. If you don't have that you can create a new initramfs image with the same command as in the guide you linked to:

# dracut /boot/initramfs-$(uname -r).img $(uname -r)

[RX3R0]

@sonoran It worked! I did this like you said, which is the reverse of the last part of the instructions I had followed

# rm /boot/initramfs-$(uname -r).img
# mv /boot/initramfs-$(uname -r)-nouveau.img /boot/initramfs-$(uname -r).img

Then did init 3 and uninstalled akmod. Then rebooted.

Everything is now running as smooth as it used to.

Thank you very much for your help!

[sonoran]

You had the right idea. Nice work.

Just for future reference, it's wise to make a backup copy of any system config file before you make any changes, or at least leave yourself a #comment in the file about what you changed in case you need to undo it.