With 100% reproducibility, the latest xf86-video-intel driver from GIT (2.99.917) when built against the latest Xorg server from GIT ( 1.18.3 ), and all the latest GIT versions of all Xorg modules as listed in Bug #95140 : https://bugs.freedesktop.org/attachment.cgi?id=123274 , the kernel gets a SIGSEGV and Xorg server quits and is restarted (by xdm) : May 1 20:21:16 jvdlux kernel: [10675.162089] X[6342]: segfault at 7c ip 00007fcf2e4f1c2c sp 00007ffd0ec6ced0 error 6 in intel_drv.so[7fcf2e4cf000+174000] May 1 20:21:16 jvdlux xdm[6348]: pam_unix(xdm:session): session closed for user jvd I guess I'd have to know exactly were in memory the Xserver HAD intel_drv.so loaded to interpret the 00007ffd0ec6ced0 instruction pointer address ? This happens reliably by browsing to any long page with firefox 46 (latest version), clicking into the main window content, and holding down the <PageDown> OR <DownArrow> keys ; it doesn't happen by holding down these keys in emacs or xterm (Firefox does have problems with scrolling, but...) I did have to patch uxa/intel_driver.c in order to compile against xserver 1.18.3 code (Bug #95140) and sna/kgem.c (Bug #95185) to avoid coredumping during initialization . My machine hardware and xorg configuration is fully documented in those bug reports. If there is any further information you require, please let me know . I'm happy to help maintain xf86-video-intel.c to work with latest Xorg server and Linux kernel - I really think it should be able to do so - but I'd need a few pointers / help to get started . How is the kernel calling into intel_drv.so ? How to map 0x00007ffd0ec6ced0 to a source file name and line number ?
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