hi Daniel, Thank you very much for you mail and I am very glad you are debugging this reported bug.
Can you please provide me a bit more guide or guide link which I can apply this patch and compile out the newly testing Xorg? Sorry I am not so familiar with our building/compile tools. thanks, Mao On Wed, May 31, 2017 at 3:07 PM, Daniel Axtens <daniel.axt...@canonical.com> wrote: > Hi, > > This is what I have figured out so far. > > For some reason the initial probing done by the modesetting driver > fails. This is part of the platform device probing stage. This failure > means the device is not claimed by the modesetting driver as a 'regular' > screen. Instead it is claimed by the fbdev driver. The modesetting > driver then claims the platform device as a 'GPU' device. It shouldn't > do that: the GPU device init is what causes the crash. > > What I am still trying to figure out is why the initial probing fails. > This is difficult to figure out from the core dump, so I have attached a > patch for xorg-server that should help. With this patch I should be able > to figure out what part of the probe doesn't go as expected. > > Please let me know if you have any trouble applying the patch. > > ** Patch added: "patch to enable extra debugging" > https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/ > 1691991/+attachment/4886582/+files/debug.patch > > -- > You received this bug notification because you are subscribed to the bug > report. > 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:~$ > > To manage notifications about this bug go to: > https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1691991/+subscriptions > -- Zhanglei Mao Solutions Architect, Sales and Business Development Canonical Group Ltd. zhanglei....@canonical.com +86-13625010929 (m) +852-6700 6026 (m) www.ubuntu.com www.canonical.com -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xorg in Ubuntu. https://bugs.launchpad.net/bugs/1691991 Title: Xorg Segmentation fault on Hisilicon D05 board (arm64) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1691991/+subscriptions _______________________________________________ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : ubuntu-x-swat@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp
