From efa0d8aef94e8b71386aa28addd15197f04ccc5a Mon Sep 17 00:00:00 2001 From: Joe Thielen Date: Sat, 24 Sep 2016 12:38:18 -0400 Subject: [PATCH 1/2] Add fix for Linux HVM kernel error on bootup: BUG: soft lockup - CPU#0 stuck for 23s! [systemd-udevd:244] --- managing-os/linux-hvm-tips.md | 35 +++++++++++++++++++++++++++++++++++ 1 file changed, 35 insertions(+) diff --git a/managing-os/linux-hvm-tips.md b/managing-os/linux-hvm-tips.md index 53e56348..f07400d2 100644 --- a/managing-os/linux-hvm-tips.md +++ b/managing-os/linux-hvm-tips.md @@ -11,6 +11,41 @@ redirect_from: Tips for Linux in HVM domain ============================ +Fixing bootup kernel error `BUG: soft lockup - CPU#0 stuck for 23s! [systemd-udevd:244]` +---------------------------------------------------------------------------------------- +*Tested with Qubes R3.2-RC3* +Issue may be related to "bochs_drm" video driver. + +To fix: + +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 ----------------- From b3f4255cd31f36310383ccd1d874c2cf8dce650c Mon Sep 17 00:00:00 2001 From: Andrew David Wong Date: Sat, 24 Sep 2016 17:56:57 -0700 Subject: [PATCH 2/2] Clean up text and fix formatting --- managing-os/linux-hvm-tips.md | 24 ++++++++++++++---------- 1 file changed, 14 insertions(+), 10 deletions(-) diff --git a/managing-os/linux-hvm-tips.md b/managing-os/linux-hvm-tips.md index f07400d2..554fbbb3 100644 --- a/managing-os/linux-hvm-tips.md +++ b/managing-os/linux-hvm-tips.md @@ -11,14 +11,18 @@ redirect_from: Tips for Linux in HVM domain ============================ -Fixing bootup kernel error `BUG: soft lockup - CPU#0 stuck for 23s! [systemd-udevd:244]` ----------------------------------------------------------------------------------------- -*Tested with Qubes R3.2-RC3* -Issue may be related to "bochs_drm" video driver. +How to fix bootup kernel error +------------------------------- -To fix: +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`. -1. Edit the file /etc/default/grub 2. Find the line which starts: ~~~ @@ -32,19 +36,19 @@ To fix: ~~~ 4. Add this text to that line: - + ~~~ modprobe.blacklist=bochs_drm ~~~ -5. Run this command: +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. - +The HVM should no longer display the error if it's related to the `bochs_drm` +kernel driver. Screen resolution -----------------