<html> <head> <base href="https://bugs.freedesktop.org/"> </head> <body> <div> <a class="bz_bug_link bz_status_ASSIGNED " title="ASSIGNED - [bdw-U] [broadwell-u] CPU/GPU halt for multiple display configurations i915 i5-5200U i5-5287U system freeze get-around: i915.enable_rc6=0" href="https://bugs.freedesktop.org/show_bug.cgi?id=95064#c11">Comment # 11</a> on <a class="bz_bug_link bz_status_ASSIGNED " title="ASSIGNED - [bdw-U] [broadwell-u] CPU/GPU halt for multiple display configurations i915 i5-5200U i5-5287U system freeze get-around: i915.enable_rc6=0" href="https://bugs.freedesktop.org/show_bug.cgi?id=95064">bug 95064</a> from <a class="email" href="mailto:maria.g.perez.ibarra@intel.com" title="maria guadalupe <maria.g.perez.ibarra@intel.com>"> maria guadalupe</a> <pre>(In reply to Harry from <a href="show_bug.cgi?id=95064#c10">comment #10</a>) > I did some tests and concluded that setting kernel command line parameter > i915.enable_rc6=0 > made Wayland not crash anymore > - it appears acceleration is then off in Wayland > - GNOME 3.18/Wayland crashed within minutes > > the setting can be checked: > cat /sys/module/i915/parameters/enable_rc6 > 0 > > documentation: > modinfo i915 | less > > rC-state is from ACPI, c0 is power on, c6 is deep power down, possibly off. > > had no effect: > intel_idle.max_cstate=1 > intel_pstate=disable > > was already set: > for g in /sys/devices/system/cpu/cpu[0-9]/cpufreq/scaling_governor; do > echo powersave > $g; echo cpu$i: $(cat $g); ((i++)); done setted kernel command line parameter i915.enable_rc6=0 and These issue is not reproduced and hardware acceleration is active with the following configuration === Software information === Kernel version 4.8.0-rc4drm-intel-nighly-ww36-commit-f91144a+ Linux distribution Ubuntu 16.04.1 LTS Architecture 64-bit Mesa version 11.2.2 (git-3a9f628 xf86-video-intel version 2.99.917 DRM version 2.4.70 Cairo version 1.15.2 Bios revision 1.69 KSC revision 1.69 === Hardware information === Platform BDW Motherboard type Lenovo G50-80 Notebook Motherboard manufacturer LENOVO CPU family Core i5 CPU information Intel(R) Core(TM) i5-5200U CPU @ 2.20GHz GPU Card Intel Corporation Broadwell-U Integrated Graphics (rev 09) (prog-if 00 [VGA controller]) Memory ram 6 GB Maximum memory ram allowed 16 GB Hard drive capacity 74GiB (80GB)</pre> </div> <hr> You are receiving this mail because: <ul> <li>You are the assignee for the bug.</li> <li>You are the QA Contact for the bug.</li> <li>You are on the CC list for the bug.</li> </ul> </body> </html>