I'm not sure what version of grub you are using... If it's the legacy version, you should have a file /boot/grub/menu.lst. In there, in the kernel line, remove the nomodeset option.

If you are using grub2, check /etc/default/grub under the GRUB_CMDLINE_LINUX_DEFAULT for the nomodeset option. You'll need to remove it and then regenerate your grub.cfg file per the directions here:

http://mirror.su.lt/openSuSE.13.1/do...ml#sec.114.kms

Let us know how you make out.

Adam

Back again. I have tried nearly all the ideas suggested in the links posted, but nothing seems to work. I have changed no KMS to yes, and even tried un-hashing the 'driver radeon' in the device file (it just crashed), but I still have the wrong resolution. I typed vbeinfo at the grub prompt and was informed that the preferred resolution 1366x768. My images are squashed and there is no colour in my videos. Any other ideas please?
Many thanks. Adrian.

Hi Adam. I am using Grub2 and the command line you mention states:
GRUB_CMDLINE_LINUX_DEFAULT=" nomodeset resume=/dev/disk/by-id/ata-ST3500418AS_5VM443DP-part2 splash=silent quiet showopts"

Do I remove the whole thing including command GRUB_CMDLINE_LINUX_DEFAULT, or just the word 'nomodeset', or everything after the word 'DEFAULt'?
Sorry for being a bit thick here.
Thanks. Adrian.

I found it-
The only way that could of occurred was if the kernel line was edited right?
Could this of been set as a default somehow?

Remove only the word nomodeset, then follow the directions given by the link Adam posted.

SUCCESS!!!! It took me a while to summon up the courage to attempt this but, I'm pleased to say that all went well and I now have a PC that is working at the right resolution. Many, many thanks to everyone who posted help and support on this problem. You are amazingly kind for giving freely of your time to post the help, and extremely patient when dealing with someone who really has no idea what is going on. I have learnt a lot and can't thank you all enough. Problem solved!

Glad to hear your resolution is ok now.

Could you share what you did to solve it?

Hi all, To resolve the issue with the resolution I followed Adam's instructions on changing the grub2 file (thanks TobiSGD for telling me what to remove) and the terminal command in the link Adam posted. After a re-boot, all worked well.
Today, however, after the boot option screen, I had no images at all. I boot normally from a solid state drive, but I also have a hard drive boot from which I was able to mount the solid state drive and check the grub file. Somehow this had replaced the 'nomodeset' and so I repeated the above from Adam's post and link and everything is working well again. I had some updates the night before and I am wondering whether this caused the file to be re-written. As I also have this resolution problem with my hard drive boot, I am rather scared to make the changes in case I lose that option as well. Any ideas?
Many thanks.
Adrian.

Back again! I missed a bit out of my previous post on solving the problem. As well as performing Adam's suggestions, I also turned off the DRM using YaST (under sysconfig editor - system - kernel, and then changing NO_KMS_IN_INITRD to 'yes'. It can also be done in /etc/sysconfig/kernel.

Still having problems with the files being set back to the original settings though, and it seems to happen after every update installation and re-boot. Weird!

Sorry for missing this bit off.
Adrian.

Well, it was good while it lasted, but, unfortunately, I'm now having new issues. After every 3 or 4 successful boots I am getting 3 or 4 boots where the screen is black. Then, as if by magic, everything is fine again. None of the config files have been altered in grub or kernel and I have no idea what is going on. another surprising thing is that the config files have also been changed in my hard drive boot, yet the resolution is still wrong. Is this the worst ever OpenSuSe version to date, or what. There are loads of things that just don't work properly, the worst for me being that latex doesn't work and as a science editor I really need this. But that is by the by, I'm just having a moan.
Any ideas as to the boot up problem from any of you wonderfully intelligent people, would be gratefully received.
Thanks.
Adrian.