Avoid a kernel driver / X server crash situation.
Change the order of our calls to xrandr to mask a situation that can cause
the GPU to hang, i915 driver to give up, and the X server to crash. This
crash is not recoverable and requires a reboot.
BUG=chromium-os:6701
TEST=manual: [Un]Plug VGA, then hit Ctrl-F4. Repeat...
This workaround changes the order of xrandr calls from:
xrandr --output LVDS1 --mode 1280x800
xrandr --output VGA1 --off
xrandr --fb 1280x800
to:
xrandr --output VGA1 --off
xrandr --fb 1280x800
xrandr --output LVDS1 --mode 1280x800
In my experimentation, turning on LVDS later makes a big difference.
But it is not perfect. I have still seen the failure, but it is much
harder to reproduce.
Change-Id: I300887ef2c65173bafeccd8afdf657f91f71c736
Review URL: http://codereview.chromium.org/5024002
1 file changed
