Dual monitor crashes Gala with SIGSEGV in _int_malloc()

[Cody Garver]

Gala runs fine if I have no monitor plugged into laptop, but as soon as I plug one in it crashes

[Avi Romanoff (aroman)]

Yep, confirmed. Happened to me yesterday. Even manually restarting Gala will cause it to re-crash shortly thereafter.

[beta992 (beta992)]

Any update? :)

Any more debug info needed?

[beta992 (beta992)]

Hi,

Just an update:
On Arch using the wingpanel-trunk branch (not the 0.3.x branch), Gala doesnt crashes with dual-monitor.
Building and installing the wingpanel 0.3.x branch did made it crash on startup with a dual-monitor.

Maybe it's not a gala issue, but a wingpanel issue?

[Cody Garver (codygarver)]

Yes, tom95 confirmed this

[Tom Beckmann (tombeckmann)]

Sorry, I formulated this slightly wrong, Wingpanel is indirectly causing the problem because it's calling gala's dbus. If nothing is ever calling gala's function which actually causes the crash, it won't crash. Gala wasn't allocating enough system memory for the texture, for some reason it is apparently slightly larger while using dual monitors, for whatever reason.

[beta992 (beta992)]

@tombeckmann: Thanks for the fix! I compiled wingpanel (0.3.x) again, and no crashes anymore with dual monitor setup. :)

[oblv (oblv1)]

@tombeckmann

I have this problem: in Isis it appears an unknown display I don't have in my notebook. So the mouse doesn't stop at the right edge of the screen but it keeps going right and it takes time to get it back on the screen. It didn't happen in Luna.
A screenshot make it clearly visible.