<html> <head> <base href="https://bugs.freedesktop.org/" /> </head> <body> <div> <a class="bz_bug_link bz_status_ASSIGNED " title="ASSIGNED --- - [HSW bisected]igt/module_reload causes [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004 and system hang with headless, with power well disabled" href="https://bugs.freedesktop.org/show_bug.cgi?id=67813#c23">Comment # 23</a> on <a class="bz_bug_link bz_status_ASSIGNED " title="ASSIGNED --- - [HSW bisected]igt/module_reload causes [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004 and system hang with headless, with power well disabled" href="https://bugs.freedesktop.org/show_bug.cgi?id=67813">bug 67813</a> from <a class="email" href="mailto:xunx.fang@intel.com" title="fangxun <xunx.fang@intel.com>"> fangxun</a> <pre>(In reply to <a href="show_bug.cgi?id=67813#c22">comment #22</a>) > (In reply to <a href="show_bug.cgi?id=67813#c21">comment #21</a>) > > > Are you sure you did the test correctly? Did you kill X and all the other > > > DRM clients when doing this? If you repeat the test with > > > i915.disable_power_well=0 do you also get the same problem? > > > > Run with i915.disable_power_well=0, also has same output info. > > > > > > > > All conditions necessary to run the other intel-gpu-tools tests apply when > > > running module_reload. > > > > Clean boot system, then test it. > > I have no idea what happens on your "clean boot system" configuration. Does > the desktop environment run? Do you have X running? "clean boot system" means system boot up without X and the desktop environment running. > That "i915.ko still loaded!" message really suggests there are programs you > need to kill before doing the tests. Please make sure your testing > environment is correct before you try to run module_reload. Since Kernel 3.12.0rc2, after running "echo 0 > /sys/class/vtconsole/vtcon1/bind" and "rmmod intel_ips &> /dev/null", lsmod shows there are still 2 programs using i915 module on haswell(I check all platform, this only happens on haswell). It causes i915 module can not be unloaded. I don't know what are the 2 programs, and how to kill them. [root@x-hsw24 ~]# lsmod Module Size Used by snd_hda_codec_realtek 34049 1 snd_hda_codec_hdmi 27236 1 snd_hda_intel 25263 0 snd_hda_codec 100145 3 snd_hda_codec_realtek,snd_hda_codec_hdmi,snd_hda_intel snd_hwdep 5094 1 snd_hda_codec snd_seq 41921 0 snd_seq_device 4581 1 snd_seq snd_pcm 66241 3 snd_hda_codec_hdmi,snd_hda_intel,snd_hda_codec iTCO_wdt 4551 1 iTCO_vendor_support 1608 1 iTCO_wdt snd_timer 15514 2 snd_seq,snd_pcm snd 50169 9 snd_hda_codec_realtek,snd_hda_codec_hdmi,snd_hda_intel,snd_hda_codec,snd_hwdep,snd_seq,snd_seq_device,snd_pcm,snd_timer serio_raw 3929 0 pcspkr 1699 0 microcode 7049 0 soundcore 4219 1 snd i2c_i801 8374 0 snd_page_alloc 5930 2 snd_hda_intel,snd_pcm lpc_ich 12608 0 mfd_core 2441 1 lpc_ich acpi_cpufreq 6299 0 freq_table 2068 1 acpi_cpufreq uinput 6676 0 ipv6 246159 43 i915 531119 2 drm_kms_helper 22993 1 i915 drm 199664 2 i915,drm_kms_helper button 4261 1 i915 video 10625 1 i915 dm_mirror 11024 0 dm_region_hash 5831 1 dm_mirror dm_log 7220 2 dm_mirror,dm_region_hash dm_mod 66376 2 dm_mirror,dm_log</pre> </div> <hr> You are receiving this mail because: <ul> <li>You are the QA Contact for the bug.</li> </ul> </body> </html>