Hmm, still not much detail but here tis:
commit f79e5368512b72bb463925983d265b070261b7aa
Author: Jim Qu <jim...@amd.com>
Date: Mon Aug 27 13:37:38 2018 +0800
modesetting: code refactor for PRIME sync
The X will be crashed on the system with other DDX driver,
such as amdgpu.
show the log like:
randr: falling back to unsynchronized pixmap sharing
(EE)
(EE) Backtrace:
(EE) 0: /usr/lib/xorg/Xorg (xorg_backtrace+0x4e)
(EE) 1: /usr/lib/xorg/Xorg (0x55cb0151a000+0x1b5ce9)
(EE) 2: /lib/x86_64-linux-gnu/libpthread.so.0 (0x7f1587a1d000+0x11390)
(EE)
(EE) Segmentation fault at address 0x0
(EE)
The issue is that modesetting as the master, and amdgpu as the slave.
Thus, when the master attempts to access pSlavePixPriv in ms_dirty_update(),
problems result due to the fact that it's accessing AMD's 'ppriv' using the
modesetting structure definition.
Apart from fixing crash issue, the patch fix other issue in master interface
in which driver should refer to master pixmap.
Signed-off-by: Jim Qu <jim...@amd.com>
Reviewed-by: Alex Goins <ago...@nvidia.com>
** Summary changed:
- X crashes when connecting to an external monitor via HDMI (I+A)
+ X crashes with "randr: falling back to unsynchronized pixmap sharing" when
connecting to an external monitor via HDMI (I+A)
--
You received this bug notification because you are a member of Ubuntu-X,
which is subscribed to xorg-server in Ubuntu.
https://bugs.launchpad.net/bugs/1789913
Title:
X crashes with "randr: falling back to unsynchronized pixmap sharing"
when connecting to an external monitor via HDMI (I+A)
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