On 4/12/21 11:16 AM, Pierre Labastie via blfs-dev wrote:
On Mon, 2021-04-12 at 09:46 +0200, Tim Tassonis via blfs-dev wrote:
Hi all
I just tried to upgrade my qemu virtual machine to glib 2.68.0, which
lead to lxdm/X not starting anymore. /var/log/lxdm.log reports:
MESA-LOADER: failed to open bochs-drm:
/opt/X11/lib/dri/bochs-drm_dri.so: cannot open shared object file: No
such file or directory (search paths /opt/X11/lib/dri)
failed to load driver: bochs-drm
The file /opt/X11/lib/dri/bochs-drm_dri.so really does not exist, but
with older glib (2.66.8) this is no problem.
A downgrade to glib 2.66.8 does actually fix the problem, so glib 2.68.0
really seems to be the problem here. I will try to investigate further,
but for the moment, I would advise people to stay away from glib 2.68.0,
at least on qemu vm's running X.
Just to be sure: the VM has been updated, but the host has not been touched (no
upgrade of glib2/qemu/whatever on host).
Correct. I now read a bit about that bochs thingy, it seems to get
triggered by
qemu -vga std
I now switched to
qemu -vga virtio
which makes the message disappear. However, lxdm still fails to start.
dmesg now shows:
[ 9.140449] lxdm-greeter-gt[2868]: segfault at 0 ip 00007f0b73b4c73d
sp 00007ffefc16b600 error 4 in libglib-2.0.so.0.6800.0[7f0b73b21000+87000]
[ 9.140460] Code: 49 8a 02 00 49 89 c6 48 85 c0 0f 84 0e 03 00 00 f6
43 2c 02 75 48 8b 53 30 48 8b 43 38 85 d2 75 09 48 85 c0 0f 84 e4 03 00
00 <48> 8b 38 48 85 ff 0f 84 f9 02 00 00 bd 08 00 00 00 eb 15 48 8b 43
So, there seems to be an incompatibility with glib 2.68.0 and lxdm. I
try to re-build lxdm with glib 2.68.0 and see if that fixes the problem.
If not, I have to revert back to 2.66.8 again.
Bye
Tim
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