[Bug 106524] New: X Server Segfault after resizing framebuffer

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=106524

            Bug ID: 106524
           Summary: X Server Segfault after resizing framebuffer
           Product: xorg
           Version: git
          Hardware: x86-64 (AMD64)
                OS: Linux (All)
            Status: NEW
          Severity: normal
          Priority: medium
         Component: Driver/intel
          Assignee: chris at chris-wilson.co.uk
          Reporter: xplodgui at gmail.com
        QA Contact: intel-gfx-bugs at lists.freedesktop.org

Created attachment 139575
  --> https://bugs.freedesktop.org/attachment.cgi?id=139575&action=edit
Xorg crash log

Hello there,

I have a Razer Blade 14" (2016), which has an integrated Intel graphics and a
dedicated NVIDIA GTX 1060M GPU to which the HDMI port is physically routed.

I am using the Intel and Nouveau driver to drive 3 screens: the integrated
3200x1800 panel on eDP1, an AOC 25" 2560x1600 screen through a USB-C to HDMI
adapter on DP1, and another AOC 25" 2560x1600 screen through the dedicated HDMI
port on HDMI-1-2.

I manage to randomly get them to work: most of the time, as soon as I plug in
the HDMI cable, the X server crashes in loop. I attached the log, I suspect the
total resolution is bigger than what is accepted by the Intel GPU or something,
even though in Ubuntu I forced the integrated panel resolution to 2560x1600 to
get below 8192x8192, it tries to assign a total surface of 8320x1800.

Is there some way to force the integrated panel to a lower resolution? I am
using my laptop primarily at work, and attached to external screens, so I
couldn't care less if it was running at 3200x1800 or 2560x1600.

Regardless, there's a crash that needs to be fixed I guess :)

Here's my Xorg.conf (required so that xrandr lists the Nvidia adapter and
detects the HDMI screen):


Section "ServerFlags"
    Option "IgnoreABI" "1"
EndSection

Section "Device"
    Identifier "Nvidia card"
    Driver "nouveau"
EndSection


I attached the Xorg.0.log of the crash.
Running Ubuntu 18.04 LTS. Here are the packages versions:

ii  xserver-xorg                                                    
1:7.7+19ubuntu7                                          amd64        X.Org X
server
ii  xserver-xorg-core                                               
2:1.19.6-1ubuntu4                                        amd64        Xorg X
server - core server
ii  xserver-xorg-input-all                                          
1:7.7+19ubuntu7                                          amd64        X.Org X
server -- input driver metapackage
ii  xserver-xorg-input-evdev                                        
1:2.10.5-1ubuntu1                                        amd64        X.Org X
server -- evdev input driver
ii  xserver-xorg-input-libinput                                      0.27.1-1  
                                              amd64        X.Org X server --
libinput input driver
ii  xserver-xorg-input-synaptics                                    
1.9.0-1ubuntu1                                           amd64        Synaptics
TouchPad driver for X.Org server
ii  xserver-xorg-input-void                                         
1:1.4.1-1build3                                          amd64        X.Org X
server -- void input driver
ii  xserver-xorg-input-wacom                                        
1:0.36.1-0ubuntu1                                        amd64        X.Org X
server -- Wacom input driver
ii  xserver-xorg-legacy                                             
2:1.19.6-1ubuntu4                                        amd64        setuid
root Xorg server wrapper
ii  xserver-xorg-video-all                                          
1:7.7+19ubuntu7                                          amd64        X.Org X
server -- output driver metapackage
ii  xserver-xorg-video-amdgpu                                        18.0.1-1  
                                              amd64        X.Org X server --
AMDGPU display driver
ii  xserver-xorg-video-ati                                           1:18.0.1-1
                                              amd64        X.Org X server --
AMD/ATI display driver wrapper
ii  xserver-xorg-video-dummy                                        
1:0.3.8-1build1                                          amd64        X.Org X
server -- dummy display driver
ii  xserver-xorg-video-fbdev                                        
1:0.4.4-1build6                                          amd64        X.Org X
server -- fbdev display driver
ii  xserver-xorg-video-intel                                        
2:2.99.917+git20171229-1                                 amd64        X.Org X
server -- Intel i8xx, i9xx display driver
ii  xserver-xorg-video-nouveau                                       1:1.0.15-2
                                              amd64        X.Org X server --
Nouveau display driver
ii  xserver-xorg-video-qxl                                          
0.1.5-2build1                                            amd64        X.Org X
server -- QXL display driver
ii  xserver-xorg-video-radeon                                        1:18.0.1-1
                                              amd64        X.Org X server --
AMD/ATI Radeon display driver
ii  xserver-xorg-video-vesa                                         
1:2.3.4-1build3                                          amd64        X.Org X
server -- VESA display driver
ii  xserver-xorg-video-vmware                                       
1:13.2.1-1build1                                         amd64        X.Org X
server -- VMware display driver

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