[Qemu-devel] virt-test broken by 'gtk: add opengl support, using egl' 97edf3bd5

[Dr. David Alan Gilbert]

Hi,
  I've just bisected a virt-test breakage down to:

97edf3bd5 'gtk: add opengl support, using egl'

I think the problem is that it's trying to start X up early
on, even in the cases when qemu would just print some help and
exit.  I'm running virt-test on a remote machine via ssh and
don't have DISPLAY set.

Symptom
-------
Virt-test run of migrate.default.tcp is marked as 'SKIP'
The debug logs show:
   TestNAError: usb controller ich9-usb-uhci1 not available

Bisect:
GOOD 2.3.0 fresh iconfigure
GOOD 4d2d2d8
GOOD a308817743be5cc051d3379477f54027deb0befb
GOOD 922cc8823e484733021a7be5b0e876eba2218623
GOOD 9441aa282bc3213ef0530cab86f318b877bac25c
GOOD 7ced9e9f6da2257224591b91727cfeee4f3977fb
BAD 97edf3bd5eab8952d475de66ede77307c12b8c48
BAD 63c67b6d4462b6589b371d55e3740e9f0dba3281
BAD 2a90c454a1b90ace56ed908cd064f2fd483d1231
BAD 39b87c7
BAD 13644819c5bf322ae4c2a415aca77d5dbde95fe8
BAD 6fa6b312765f698dc81b

97edf3bd5eab8952d475de66ede77307c12b8c48 is the first bad commit
commit 97edf3bd5eab8952d475de66ede77307c12b8c48
Author: Gerd Hoffmann <address@hidden>
Date:   Tue Jan 20 12:43:28 2015 +0100

    gtk: add opengl support, using egl


Virt-test at startup runs

qemu -device ?

to get a list of devices; on older versions that gives
me the list and exit's with $?=0

on 973ef3 it does:
address@hidden virt-test]# /root/try/bin/qemu-system-x86_64 -device '?'

(qemu-system-x86_64:5192): Gtk-WARNING **: cannot open display: 


(Test environment is RHEL7.1ish)

Dave
--
Dr. David Alan Gilbert / address@hidden / Manchester, UK