On 11/07/2021 10.22, Ed Greshko wrote:
On 10/07/2021 19:09, Eyal Lebedinsky wrote:
>
> On 10/07/2021 10.56, Ed Greshko wrote:
>> On 10/07/2021 08:44, Eyal Lebedinsky wrote:
>>> Recently I started having Xorg crash while using firefox.
>>> This is f34 in a libvirt kvm, host (also f34) uses internal i915 video.
>>>
Kernel is 5.12.14-300.fc34.x86_64 but saw this with earlier 5.12.12/13 kernels.
>>
>> I've not seen any crashes on my VM. Host is F34 and multiple guests,
including F34 guests.
>>
>> As a test, have you tried changing your guest video from QXL to Virtio?
>
> Worth a try. I am now running with Virtio video. Audio sync is a bit out...
>
> Interestingly: I tried to change back to QXL for comparo but LXD could not start,
> X repeatedly terminated with
> [ 43.747] resizing primary to 3840x2160
> [ 43.747] primary is 0x5640e09faa30
> [ 43.747] (EE) qxl(0): failed to set mode: Cannot allocate memory(EE)
> I will deal with this later.
>
Is your host running low on memory?
I do not think so. I changed back to QXL and LXDM failed in a loop, at that point
I did this on the host:
$ free
total used free shared buff/cache available
Mem: 32734592 3232096 7343812 246400 22158684 28782264
Swap: 16777212 1064704 15712508
The guest is configured with 8GB memory.
[later] I had a very vague memory that I needed to fiddle with the domain xml file.
I restored /etc/libvirt/qemu/e4.xml from backup and compared and sure it was different.
I used
$ sudo virsh edit e4
and set the <video> stanza to say
<model type='qxl' ram='131072' vram='131072'
vgamem='32768' heads='1' primary='yes'/>
where it originally said
<model type='qxl' ram='65536' vram='65536'
vgamem='16384' heads='1' primary='yes'/>
Now lxdm starts OK.
Audio sync still bad. Video barely keeps up. Probably similar to virtio mode.
I will run this way until I get an Xorg crash, then switch to virtio to see if it is
better.
--
Eyal Lebedinsky (fedora(a)eyal.emu.id.au)