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Launching Gnome Settings the system freezes for some seconds

asked 2016-03-22 04:43:57 -0500

donato gravatar image

It happens regularly if I launch the Gnome Settings or if I open a pdf with Okular: everything is frozen for 3-6 seconds. I suspect that is something related with the kernel because I noticed this behavior after a kernel update. Unfortunately, the old kernel was removed and I'm not able to downgrade (it was removed by the repositories).

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On boot you can usually choose between 3 kernels. Just try an older one.

What kernel, Fedora version and okular version are you running?

genodeftest gravatar imagegenodeftest ( 2016-03-23 14:40:19 -0500 )edit

Unfortunately, my older kernel is already affected by this problem. I'm experiencing this problem on F23 kernel 4.4.5-300.fc23.x86_64

donato gravatar imagedonato ( 2016-03-24 07:52:31 -0500 )edit

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answered 2016-03-25 04:51:55 -0500

donato gravatar image

I discovered that it was not caused by the kernel but by the video driver (I've an NVIDIA with optimus staff). I solved, but I'm not fully sure of what has specifically solved: I think that removing the Nouveau driver was the key, because I was following the NVIDIA proprietary driver installation (but at the end I've not completed the installation) Here the step that I followed:

# echo "blacklist nouveau" >> /etc/modprobe.d/blacklist.conf

Append ‘rd.driver.blacklist=nouveau’ to end of ‘GRUB_CMDLINE_LINUX=”…”‘

GRUB_CMDLINE_LINUX="rd.lvm.lv=fedora/swap rd.lvm.lv=fedora/root rhgb quiet rd.driver.blacklist=nouveau"

Update grub2 conf

## BIOS ##
grub2-mkconfig -o /boot/grub2/grub.cfg

## UEFI ##
grub2-mkconfig -o /boot/efi/EFI/fedora/grub.cfg

Generate initramfs

## Backup old initramfs nouveau image ##
mv /boot/initramfs-$(uname -r).img /boot/initramfs-$(uname -r)-nouveau.img

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

Reboot

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Asked: 2016-03-22 04:43:57 -0500

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Last updated: Mar 22 '16