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Bug#694953: xserver-xorg-video-intel: Display sometimes freezes, apparently after switching monitor away



On Sun, Dec  2, 2012 at 16:34:38 +0000, Tony Houghton wrote:

> [29597.106701] WARNING: at /build/buildd-linux_3.5-1~experimental.1-amd64-Fqdztq/linux-3.5/drivers/gpu/drm/i915/intel_display.c:933 assert_pch_pll+0xec/0x1d0 [i915]()
> [29597.106703] Modules linked in: joydev hid_generic usbhid hid parport_pc ppdev lp parport bnep rfcomm bluetooth cpufreq_conservative rfkill cpufreq_userspace cpufreq_stats cpufreq_powersave binfmt_misc nfsd nfs nfs_acl auth_rpcgss fscache lockd sunrpc loop fuse snd_hda_codec_hdmi snd_hda_codec_realtek usblp coretemp kvm_intel snd_hda_intel kvm snd_hda_codec snd_hwdep snd_pcm_oss snd_mixer_oss crc32c_intel snd_pcm ghash_clmulni_intel aesni_intel snd_page_alloc snd_seq_midi snd_seq_midi_event aes_x86_64 snd_rawmidi snd_seq i915 aes_generic acpi_cpufreq cryptd evdev mperf video drm_kms_helper drm snd_seq_device snd_timer microcode i2c_algo_bit i2c_i801 shpchp lpc_ich psmouse snd i2c_core mfd_core serio_raw pcspkr soundcore processor button thermal_sys ext4 crc16 jbd2 mbcache sg sr_mod cdrom sd_mod crc_t10dif ahci libahci libata scsi_mod xhci_hcd ehci_hcd e1000e usbcore usb_common [last unloaded: scsi_wait_scan]
> [29597.106750]  [<ffffffffa007b3a9>] ? drm_crtc_helper_set_mode+0x20d/0x385 [drm_kms_helper]
> [29597.106756]  [<ffffffffa007b574>] ? drm_helper_resume_force_mode+0x53/0xff [drm_kms_helper]
> [29597.106758]  [<ffffffffa028c17c>] ? i915_drm_thaw+0xd1/0x108 [i915]
> [46470.547241] [drm] Enabling RC6 states: RC6 on, RC6p off, RC6pp off
> [46470.600064] WARNING: at /build/buildd-linux_3.5-1~experimental.1-amd64-Fqdztq/linux-3.5/drivers/gpu/drm/i915/intel_display.c:933 assert_pch_pll+0xec/0x1d0 [i915]()
> [46470.600066] Modules linked in: joydev hid_generic usbhid hid parport_pc ppdev lp parport bnep rfcomm bluetooth cpufreq_conservative rfkill cpufreq_userspace cpufreq_stats cpufreq_powersave binfmt_misc nfsd nfs nfs_acl auth_rpcgss fscache lockd sunrpc loop fuse snd_hda_codec_hdmi snd_hda_codec_realtek usblp coretemp kvm_intel snd_hda_intel kvm snd_hda_codec snd_hwdep snd_pcm_oss snd_mixer_oss crc32c_intel snd_pcm ghash_clmulni_intel aesni_intel snd_page_alloc snd_seq_midi snd_seq_midi_event aes_x86_64 snd_rawmidi snd_seq i915 aes_generic acpi_cpufreq cryptd evdev mperf video drm_kms_helper drm snd_seq_device snd_timer microcode i2c_algo_bit i2c_i801 shpchp lpc_ich psmouse snd i2c_core mfd_core serio_raw pcspkr soundcore processor button thermal_sys ext4 crc16 jbd2 mbcache sg sr_mod cdrom sd_mod crc_t10dif ahci libahci libata scsi_mod xhci_hcd ehci_hcd e1000e usbcore usb_common [last unloaded: scsi_wait_scan]
> [46470.600113]  [<ffffffffa007b3a9>] ? drm_crtc_helper_set_mode+0x20d/0x385 [drm_kms_helper]
> [46470.600119]  [<ffffffffa007b574>] ? drm_helper_resume_force_mode+0x53/0xff [drm_kms_helper]
> [46470.600121]  [<ffffffffa028c17c>] ? i915_drm_thaw+0xd1/0x108 [i915]
> 
Your kernel is unhappy.  Please attach a full dmesg if this is still
reproducible with a 3.7 or 3.8 kernel and 2.21.0 intel driver.

Cheers,
Julien

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