grub.cfg is regenerated in the same way you originally generated it i.e. using grub-mkconfig -o /boot/grub/grub.cfg. Obviously choose a different name if you want to inspect it before installing it.
If you generate e.g. grub-mkcofnig -o /tmp/grub.cfg does that file include nomodeset? It must be coming from somewhere...
i regenerated it and restarted system and everything works fine.
And there is no nomodeset in the regenerated grub.cfg.
If you generate e.g. grub-mkcofnig -o /tmp/grub.cfg does that file include nomodeset? It must be coming from somewhere...
]]>Please edit the post above where you quote somebody else's words under my name (the second quote in post #4). I know nothing about the radeon driver!
As has been pointed out, unless you plan to always manage grub.cfg manually, you should not edit that file directly but instead customise the kernel command line using /etc/default/grub and regenerating grub.cfg. Otherwise your changes will get nuked when you next have to regenerate the config file e.g. if grub is updated.
Sorry about the post, i don't know why it happened.
How exactly should i do that? there is no nomodeset in it. and how is regenerating grub.cfg?
Thanks.
As has been pointed out, unless you plan to always manage grub.cfg manually, you should not edit that file directly but instead customise the kernel command line using /etc/default/grub and regenerating grub.cfg. Otherwise your changes will get nuked when you next have to regenerate the config file e.g. if grub is updated.
]]>Yes, grub.cfg is where you edit the kernel command line. And that is the only place where you should have to remove "nomodeset" if nothing in your modprobe.d refers to radeon.
If for some reason that doesn't work and radeon still fails to load, try running "modprobe radeon" once you get to the console or even "modprobe radeon modeset=1" to be sure.
First code gives an error and the second one gives a black screen.
But removing nomodeset from /boot/grub/grub.cfg worked and the problem is solved!
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Can i install proprietary driver again? what should i do to keep it working after updating the kernel?(should i use Catalyst-hook/Catalyst-generator?)
Thanks everyone!
]]>What's the output of
sudo cat /etc/default/grub
You should not edit /boot/grub/grub.cfg directly as it gets generated automatically.
]]>If for some reason that doesn't work and radeon still fails to load, try running "modprobe radeon" once you get to the console or even "modprobe radeon modeset=1" to be sure.
]]>Welcome to the forums. Did you install ati-dri?
Thank you, yes i have installed it.
Remove things like "nomodeset", "radeon.modeset=0" and "options radeon modeset=0" in your kernel command line and modprobe.d. Recent versions of the radeon driver only support KMS.
Sorry but what/where exactly are kernel command line & modprobe.d?
I checked /boot/grub/grub.cfg and there are 2 nomodeset quiets in it.
& there is only one file in /etc/modprobe.d/ (alsa-base.conf).
[drm:radeon_init] *ERROR* No UMS support in radeon module!
dmesg | egrep "drm|radeon" output:
[ 4.804506] [drm] Initialized drm 1.1.0 20060810
[ 4.844137] [drm] VGACON disable radeon kernel modesetting.
[ 4.844143] [drm:radeon_init] *ERROR* No UMS support in radeon module!
*my graphic card is ATI 5770
What information should i provide and/or what should i do?
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