[SOLVED] mga7: kernel panic after new installation

[magfan]

I installed mga7 on a HP zBook G3 with Intel chip and Nvidia graphics card. While this was working with mga6 this I ended up with a kernel panic after reboot. Just to make it clear: I did not an upgrade of mga6 but a completley new installation. Any idea what I could try?

[martinw]

Try adding the option

Code: Select all

nouveau.runpm=0


to the boot command line, to see if that works around the bug.

[magfan]

Well, after all I found two possibilities to solve this problem. The first and easiest solution was to set the graphics output in the BIOS to "discrete". In this case I could configure and use the laptop like any other system with only one graphic card. But not every BIOS offers this option.

The second solution was more complicated because the option "nouveau.runpm=0" alone did not solve the problem. I had to do the following:

0. Leave the BIOS untouched (graphics output = "auto").

1. Install Mageia 7 from DVD.

2. At the end of installation just reboot the system.

3. Start into rescue mode and enter the root password when asked for it.

4. Start mcc and configure the nvidia card. During this step all required nvidia drivers will be installed.

5. Add "nouveau.modeset=0 nouveau.runpm=0" to the boot command line in "/etc/default/grub".

6. Run "update-grub2"

7. Create a blacklist file "/etc/modprobe.d/blacklist-nouveau.conf" with the following two lines:

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blacklist nouveau
options nouveau modeset=0

8. Run "dracut -f"

9. Reboot the system.

10. Mageia will complain that the loaded driver does not match the graphics card but it will start correctly once you click on OK.

11. Login

12. Start mcc and configure the intel chip.

13. Make sure that "/etc/X11/xorg.conf" does not contain "nouveau". If it does change it to "nvidia"

14. Install mageia-prime.

15. Now you can run "mageia-prime-install" to switch to nvidia and "mageia-prime-uninstall" to switch back to intel. Both commands should be used without any options:

'-g' you do not need because you already added 'nouveau.modeset=0' to the boot command line in step 5.
'-b' you do not need because you definitely want the nouveau driver being blacklisted
'-z' zapping the x-server currently does not work due to a bug [https://bugs.mageia.org/show_bug.cgi?id=25101]