diff --git a/managing-os/linux-hvm-tips.md b/managing-os/linux-hvm-tips.md index 53e56348..554fbbb3 100644 --- a/managing-os/linux-hvm-tips.md +++ b/managing-os/linux-hvm-tips.md @@ -11,6 +11,45 @@ redirect_from: Tips for Linux in HVM domain ============================ +How to fix bootup kernel error +------------------------------- + +This concerns the following: + + BUG: soft lockup - CPU#0 stuck for 23s! [systemd-udevd:244] + +This has been tested with Qubes `R3.2-RC3`. Note that the issue may be related +to the `bochs_drm` video driver. To fix this: + +1. Edit the file `/etc/default/grub`. + +2. Find the line which starts: + + ~~~ + GRUB_CMDLINE_LINUX= + ~~~ + +3. Remove this text from that line: + + ~~~ + rhgb + ~~~ + +4. Add this text to that line: + + ~~~ + modprobe.blacklist=bochs_drm + ~~~ + +5. Run this command: + + ~~~ + grub2-mkconfig --output=/boot/grub2/grub.cfg + ~~~ + +The HVM should no longer display the error if it's related to the `bochs_drm` +kernel driver. + Screen resolution -----------------