kvm hangs occasionally when switching out of the qemu console
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
QEMU |
Expired
|
Undecided
|
Unassigned | ||
qemu (Ubuntu) |
Expired
|
Medium
|
Unassigned |
Bug Description
To recreate (although this does *NOT* fail most of the time alas):
1) press "ctrl-alt-2" to switch to the qemu console.
2) type say "sendkey ctrl-alt-f1"
3) press "ctrl-alt-1".
Expected outcome: Switch to tty1 in the VM.
Actual outcome: No switch to tty1 in the VM. and qemu console unresponsive to any keyboard input.
Rather a vague problem description I'm afraid but this has happened to me 3 times recently. No crash and no excessive CPU is observed.
I'll grab an strace when it happens again and attach...
ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: qemu-system-x86 1.6.0+dfsg-2ubuntu4
ProcVersionSign
Uname: Linux 3.12.0-4-generic i686
NonfreeKernelMo
ApportVersion: 2.12.7-0ubuntu1
Architecture: i386
CurrentDesktop: Unity
Date: Tue Dec 3 15:41:40 2013
InstallationDate: Installed on 2010-10-21 (1139 days ago)
InstallationMedia: Ubuntu 10.10 "Maverick Meerkat" - Release i386 (20101007)
SourcePackage: qemu
UpgradeStatus: Upgraded to trusty on 2013-11-01 (31 days ago)
... as if by magic it hung again :) I managed to trigger it by toggling the following two key combos rapidly starting from within the qemu console:
ctrl-alt-1 # switch to console (actually, we're already there, but ...)
ctrl-alt-2 # switch out of console