[ 41.404078] [drm:__gen6_gt_force_wake_get] *ERROR* Timed out waiting for forcewake to ack request. [ 41.409844] [drm:__gen6_gt_wait_for_thread_c0] *ERROR* GT thread status wait timed out [ 47.682958] [drm:i915_hangcheck_hung] *ERROR* Hangcheck timer elapsed... GPU hung [ 47.682983] [drm] capturing error event; look for more information in/sys/kernel/debug/dri/0/i915_error_state [ 47.692914] [drm:__gen6_gt_force_wake_get] *ERROR* Timed out waiting for forcewake to ack request. [ 47.695920] [drm:__gen6_gt_wait_for_thread_c0] *ERROR* GT thread status wait timed out [ 47.747951] [drm:init_ring_common] *ERROR* render ring initialization failed ctl 00000000 head 00000000 tail 00000000 start 00000000 [ 47.753137] ------------[ cut here ]------------ [ 47.753174] WARNING: at /home/lund/src/linux/drivers/gpu/drm/i915/intel_pm.c:4394 __gen6_gt_wait_for_fifo+0x72/0x90 [i915]() [ 47.753178] Hardware name: MacBookPro8,2 [ 47.753181] Modules linked in: rfcomm bnep ipv6 snd_hda_codec_hdmi coretemp ghash_clmulni_intel aesni_intel btusb bluetooth xts snd_hda_codec_cirrus aes_x86_64 lrw gf128mul snd_hda_intel uvcvideo arc4 b43 radeon ssb mac80211 ablk_helper snd_hda_codec videobuf2_vmalloc snd_hwdep videobuf2_memops snd_pcm videobuf2_core snd_page_alloc tg3 i915 cfg80211 cryptd snd_timer ptp acpi_cpufreq bcm5974 videodev ttm rfkill applesmc pps_core libphy snd input_polldev drm_kms_helper bcma mperf soundcore apple_gmux evdev i2c_i801 processor ac battery apple_bl binfmt_misc autofs4 sdhci_pci crc32c_intel firewire_ohci sdhci firewire_core mmc_core crc_itu_t vfat fat btrfs crc32c libcrc32c xor zlib_deflate raid6_pq ext4 crc16 jbd2 sr_mod mbcache cdrom ata_piix ahci libahci sd_mod crc_t10dif libata uhci_hcd ehci_pci ehci_hcd [ 47.753302] usbhid usbcore usb_common hid_apple hid_generic hid [ 47.753316] Pid: 98, comm: kworker/u:5 Not tainted 3.9.0-rc8+ #84 [ 47.753319] Call Trace: [ 47.753334] [] ? warn_slowpath_common+0x65/0x90 [ 47.753354] [] ? __gen6_gt_wait_for_fifo+0x72/0x90 [i915] [ 47.753370] [] ? i915_write32+0x14c/0x1b0 [i915] [ 47.753388] [] ? init_render_ring+0x14c/0x360 [i915] [ 47.753403] [] ? i915_reset+0xc7/0x180 [i915] [ 47.753419] [] ? i915_error_work_func+0xba/0x140 [i915] [ 47.753432] [] ? process_one_work+0x15f/0x3d0 [ 47.753441] [] ? worker_thread+0x106/0x3c0 [ 47.753449] [] ? busy_worker_rebind_fn+0x90/0x90 [ 47.753456] [] ? kthread+0xaf/0xc0 [ 47.753463] [] ? kthread_create_on_node+0x110/0x110 [ 47.753475] [] ? ret_from_fork+0x7c/0xb0 [ 47.753481] [] ? kthread_create_on_node+0x110/0x110 [ 47.753485] ---[ end trace bc7e79f74f8786d9 ]--- [ 47.769378] [drm:__gen6_gt_force_wake_get] *ERROR* Timed out waiting for forcewake to ack request. [ 47.781615] [drm:__gen6_gt_wait_for_thread_c0] *ERROR* GT thread status wait timed out