Pual Liu analyse for this bug, he provide a temporarily fix but it seems not
works (no output in monitor)
-------------------------------------------
Hi all,
I look deep into the problem and I'm not sure if it is the kernel issue or Xorg
issue.
We might need to spend more time on this issue to tracing into the Xorg code.
The problem happens to the modesetting driver in Xorg. So if you remove
/usr/lib/xorg/modules/drivers/modesetting_drv.so it will use the fbdev driver
and the X will start.
When modesetting is there, we got a SIGSEGV. And it happens to a line
that shouldn't have any problem.
void
RRSetChanged(ScreenPtr pScreen)
{
/* set changed bits on the master screen only */
ScreenPtr master;
rrScrPriv(pScreen);
rrScrPrivPtr mastersp;
if (pScreen->isGPU) {
master = pScreen->current_master;
if (!master)
return;
mastersp = rrGetScrPriv(master);
}
else {
master = pScreen;
mastersp = pScrPriv;
}
mastersp->changed = TRUE; // <---- CRASH here
}
So we need to figure out why mastersp disappeared.
There might be some race conditions here.
--------------------------------------------------------------------
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You received this bug notification because you are a member of Desktop
Packages, which is subscribed to xorg in Ubuntu.
https://bugs.launchpad.net/bugs/1691991
Title:
Xorg Segmentation fault on Hisilicon D05 board (arm64)
Status in xorg package in Ubuntu:
New
Bug description:
ubuntu@ubuntu:~$ sudo /usr/lib/xorg/Xorg
[sudo] password for ubuntu:
X.Org X Server 1.18.4
Release Date: 2016-07-19
X Protocol Version 11, Revision 0
Build Operating System: Linux 4.4.0-45-generic aarch64 Ubuntu
Current Operating System: Linux ubuntu 4.10.0-20.22-generic
#22+pearl.2-Ubuntu SMP Thu Apr 27 20:23:08 UTC 2017 aarch64
Kernel command line: BOOT_IMAGE=/boot/vmlinuz-4.10.0-20.22-generic
root=UUID=eee681c5-04ce-4cd0-a004-cae6717961ce ro debug
earlycon=pl011,mmio,0x602B0000 console=tty0
Build Date: 02 November 2016 10:05:28PM
xorg-server 2:1.18.4-0ubuntu0.2 (For technical support please see
http://www.ubuntu.com/support)
Current version of pixman: 0.33.6
Before reporting problems, check http://wiki.x.org
to make sure that you have the latest version.
Markers: (--) probed, (**) from config file, (==) default setting,
(++) from command line, (!!) notice, (II) informational,
(WW) warning, (EE) error, (NI) not implemented, (??) unknown.
(==) Log file: "/var/log/Xorg.0.log", Time: Fri May 19 18:10:13 2017
(==) Using system config directory "/usr/share/X11/xorg.conf.d"
pci id for fd 10: 19e5:1711, driver (null)
EGL_MESA_drm_image required.
(EE)
(EE) Backtrace:
(EE) 0: /usr/lib/xorg/Xorg (xorg_backtrace+0x58) [0xaaaad7f1cc48]
(EE)
(EE) Segmentation fault at address 0xa0
(EE)
Fatal server error:
(EE) Caught signal 11 (Segmentation fault). Server aborting
(EE)
(EE)
Please consult the The X.Org Foundation support
at http://wiki.x.org
for help.
(EE) Please also check the log file at "/var/log/Xorg.0.log" for additional
information.
(EE)
(EE) Server terminated with error (1). Closing log file.
Aborted (core dumped)
ubuntu@ubuntu:~$
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