| Summary: | Segmentation fault at 0x3600000000 or 0x22 | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| Product: | xorg | Reporter: | Wilco Baan Hofman <wilco> | ||||||
| Component: | Server/General | Assignee: | Xorg Project Team <xorg-team> | ||||||
| Status: | RESOLVED MOVED | QA Contact: | Xorg Project Team <xorg-team> | ||||||
| Severity: | normal | ||||||||
| Priority: | medium | ||||||||
| Version: | unspecified | ||||||||
| Hardware: | Other | ||||||||
| OS: | All | ||||||||
| Whiteboard: | |||||||||
| i915 platform: | i915 features: | ||||||||
| Attachments: |
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Created attachment 134495 [details]
Relevant kernel log
To clarify: The relevant path through the script is this: #!/bin/bash xrandr -d :0 --output eDP-1 --off xrandr -d :0 --output DP-1 --off xrandr -d :0 --output DP-2-1 --off xrandr -d :0 --output DP-2-2 --off xrandr -d :0 --output DP-2-1 --crtc 1 --mode 1920x1080 xrandr -d :0 --output DP-1 --crtc 0 --mode 1920x1080 --right-of DP-2-1 xrandr -d :0 --output DP-2-2 --crtc 2 --mode 1920x1080 --right-of DP-1 -- GitLab Migration Automatic Message -- This bug has been migrated to freedesktop.org's GitLab instance and has been closed from further activity. You can subscribe and participate further through the new bug through this link to our GitLab instance: https://gitlab.freedesktop.org/xorg/xserver/issues/523. |
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Created attachment 134494 [details] Xorg.0.log Hi, I'm experiencing crashes on a thinkpad T440 when changing resolutions or CRTCs with an UltraDock (probably DisplayPort MST-related). This is using X.org 1.19.3 with the modesetting driver on Debian kernel linux 4.12.0-2-amd64 (but also on earlier kernels). When docking/undocking or otherwise connecting multiple displays, there are usually modesetting problems due to CRTC assignments. Fixing the CRTC assignments, however, usually crashes X, especially when the session is a bit older or when there was a suspend/resume somewhere before. [ 913.018] (II) modeset(0): Allocate new frame buffer 1920x1080 stride [ 913.019] (EE) [ 913.019] (EE) Backtrace: [ 913.019] (EE) 0: /usr/lib/xorg/Xorg (xorg_backtrace+0x4a) [0x56217193bc7a] [ 913.019] (EE) 1: /usr/lib/xorg/Xorg (0x562171782000+0x1bda29) [0x56217193fa29] [ 913.019] (EE) 2: /lib/x86_64-linux-gnu/libpthread.so.0 (0x7f778c71c000+0x110c0) [0x7f778c72d0c0] [ 913.019] (EE) 3: /usr/lib/xorg/Xorg (0x562171782000+0xd7bd6) [0x562171859bd6] [ 913.019] (EE) 4: /usr/lib/xorg/Xorg (0x562171782000+0xd7d9b) [0x562171859d9b] [ 913.019] (EE) 5: /usr/lib/xorg/Xorg (0x562171782000+0xd4013) [0x562171856013] [ 913.019] (EE) 6: /usr/lib/xorg/Xorg (ProcRRSetScreenSize+0xe8) [0x5621718a7a48] [ 913.019] (EE) 7: /usr/lib/xorg/Xorg (0x562171782000+0x545e5) [0x5621717d65e5] [ 913.019] (EE) 8: /usr/lib/xorg/Xorg (0x562171782000+0x58568) [0x5621717da568] [ 913.019] (EE) 9: /lib/x86_64-linux-gnu/libc.so.6 (__libc_start_main+0xf1) [0x7f778c39d2b1] [ 913.019] (EE) 10: /usr/lib/xorg/Xorg (_start+0x2a) [0x5621717c421a] [ 913.019] (EE) [ 913.019] (EE) Segmentation fault at address 0x22 [ 913.019] (EE) Fatal server error: [ 913.019] (EE) Caught signal 11 (Segmentation fault). Server aborting Usually reproducible with: #!/bin/bash xrandr -d :0 --output eDP-1 --off xrandr -d :0 --output DP-1 --off xrandr -d :0 --output DP-2-1 --off xrandr -d :0 --output DP-2-2 --off if xrandr -d :0|egrep -q '^DP-1 connected'; then xrandr -d :0 --output DP-2-1 --crtc 1 --mode 1920x1080 xrandr -d :0 --output DP-1 --crtc 0 --mode 1920x1080 --right-of DP-2-1 xrandr -d :0 --output DP-2-2 --crtc 2 --mode 1920x1080 --right-of DP-1 else xrandr -d :0 --output eDP-1 --crtc 0 --mode 1920x1080 --right-of DP-2-1 fi Possibly related, the i915 kernel module is also stressing a bit about underruns: [ 809.933002] [drm:intel_set_cpu_fifo_underrun_reporting [i915]] *ERROR* uncleared fifo underrun on pipe B [ 809.933025] [drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR* CPU pipe B FIFO underrun [ 811.036711] [drm:intel_set_cpu_fifo_underrun_reporting [i915]] *ERROR* uncleared fifo underrun on pipe B [ 811.036732] [drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR* CPU pipe B FIFO underrun [ 913.602996] [drm:intel_set_cpu_fifo_underrun_reporting [i915]] *ERROR* uncleared fifo underrun on pipe C [ 913.603022] [drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR* CPU pipe C FIFO underrun