Created attachment 92680 [details] Xorg.0.log With the latest git xf86-video-intel I am getting a segfault immediately upon starting the X server. The last known working version of the driver was 1.15.0 which unfortunately not longer builds against the latest X server. Here's the backtrace from GDB... Program terminated with signal 11, Segmentation fault. #0 0x00007ffbb6f8e187 in sna_probe_initial_configuration (sna=0x7ffbbb936000) at sna_display.c:3495 3495 if (to_sna_crtc(crtc)->id != crtc_id) (gdb) bt #0 0x00007ffbb6f8e187 in sna_probe_initial_configuration (sna=0x7ffbbb936000) at sna_display.c:3495 #1 0x00007ffbb6f8e743 in sna_mode_pre_init (scrn=0x1a2cbe0, sna=0x7ffbbb936000) at sna_display.c:3638 #2 0x00007ffbb6f934d3 in sna_pre_init (scrn=0x1a2cbe0, flags=0) at sna_driver.c:611 #3 0x000000000047e392 in InitOutput ( pScreenInfo=pScreenInfo@entry=0x822200 <screenInfo>, argc=argc@entry=1, argv=argv@entry=0x7fff40f69418) at /usr/src/debug/x11-base/xorg-server-1.15.0/xorg-server-1.15.0/hw/xfree86/common/xf86Init.c:594 #4 0x000000000043f906 in dix_main (argc=1, argv=0x7fff40f69418, envp=<optimized out>) at /usr/src/debug/x11-base/xorg-server-1.15.0/xorg-server-1.15.0/dix/main.c:200 #5 0x00007ffbb9a46bf5 in __libc_start_main (main=0x42a520 <main>, argc=1, ubp_av=0x7fff40f69418, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7fff40f69408) at libc-start.c:258 #6 0x000000000042a551 in _start () Obligatory version information... Intel G45 chip Linux 3.12.5 xf86-video-intel (git but most of the 2.99.xxx versions I tried failed too) X server 1.15.0 libdrm 2.4.51 I will attempt to bisect if I have time
Correction: last known working version of the intel driver was 2.21.15, which no longer builds against the lastest X server.
OK that was easy. Doesn't revert cleanly on master. 8ecb758697af42e8e68edee0d1945986470a9c04 is the first bad commit commit 8ecb758697af42e8e68edee0d1945986470a9c04 Author: Chris Wilson <chris@chris-wilson.co.uk> Date: Sat Aug 31 19:44:50 2013 +0100 sna: Expand the array of fake outputs if the last is used Always maintain one spare so that we can reconfigure for any number of desired outputs on the fly. Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk> :040000 040000 81f258cd3d7db70d745a3f5b2ca55969919a6dc0 4084b984c91e50d2f684f461a373df297b59bc63 M src :040000 040000 92a07871a383eae1947956ad55d46e2a33e731a7 1ec1b24b49f49d81623cb56e7ec624c1767a661f M tools
Created attachment 92684 [details] [review] Protect against fake CRTCs during initial probe That's bizarre that it would take so long for this to explode. Looks like it has been broken for quite some time. :|
Patch seems to work, thanks.
Thanks, commit 6914b3af7f26c7b61e4ee6ea3a6ccda5011fa4da Author: Chris Wilson <chris@chris-wilson.co.uk> Date: Thu Jan 23 16:30:07 2014 +0000 sna: Protect against fake CRTCs during initial probe Reported-by: Nick Bowler <nbowler@draconx.ca> Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=73981 Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
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