A placa gráfica freqüentemente congela no Ubuntu 16.04 executado em um Macbook 4,1.
Com base nas informações que encontrei no System Log, parece que algo relacionado ao driver gráfico ficou preso aqui:
[drm:drm_atomic_helper_commit_cleanup_done [drm_kms_helper]]
*ERROR* [CRTC:34:pipe B] flip_done timed out
Log completo aqui:
[ 1015.776238] [drm:drm_atomic_helper_commit_cleanup_done [drm_kms_helper]] *ERROR* [CRTC:34:pipe B] flip_done timed out
[ 1015.880308] ------------[ cut here ]------------
[ 1015.880360] WARNING: CPU: 0 PID: 1017 at /home/kernel/COD/linux/drivers/gpu/drm/drm_irq.c:1237 drm_wait_one_vblank+0x1aa/0x1b0 [drm]
[ 1015.880362] vblank wait timed out on crtc 1
[ 1015.880365] Modules linked in: rfcomm bnep btusb btrtl btbcm btintel bluetooth joydev isight_firmware nls_utf8 hfsplus applesmc input_polldev snd_hda_codec_realtek snd_hda_codec_generic snd_hda_intel snd_hda_codec snd_hda_core snd_hwdep snd_pcm snd_seq_midi snd_seq_midi_event snd_rawmidi coretemp kvm_intel kvm irqbypass snd_seq wl(POE) snd_seq_device snd_timer input_leds appletouch cfg80211 snd lpc_ich soundcore shpchp sbs sbshc mac_hid apple_bl parport_pc ppdev lp parport autofs4 hid_apple hid_appleir hid_generic usbhid hid i915 i2c_algo_bit drm_kms_helper ahci syscopyarea sysfillrect firewire_ohci libahci sysimgblt firewire_core pata_acpi crc_itu_t fb_sys_fops sky2 drm fjes video
[ 1015.880479] CPU: 0 PID: 1017 Comm: Xorg Tainted: P W OE 4.10.0-041000-generic #201702191831
[ 1015.880482] Hardware name: Apple Inc. MacBook4,1/Mac-F22788A9, BIOS MB41.88Z.00C1.B00.0802091535 02/09/08
[ 1015.880484] Call Trace:
[ 1015.880497] dump_stack+0x63/0x81
[ 1015.880503] __warn+0xcb/0xf0
[ 1015.880507] warn_slowpath_fmt+0x5f/0x80
[ 1015.880514] ? finish_wait+0x56/0x70
[ 1015.880543] drm_wait_one_vblank+0x1aa/0x1b0 [drm]
[ 1015.880548] ? wake_atomic_t_function+0x60/0x60
[ 1015.880583] ? drm_atomic_state_clear+0x30/0x30 [drm]
[ 1015.880690] intel_get_load_detect_pipe+0x5ff/0x650 [i915]
[ 1015.880765] intel_tv_detect+0x158/0x550 [i915]
[ 1015.880789] drm_helper_probe_single_connector_modes+0x2c4/0x520 [drm_kms_helper]
[ 1015.880820] ? drm_mode_object_get_properties+0xdd/0x100 [drm]
[ 1015.880826] ? mutex_lock+0x12/0x40
[ 1015.880858] drm_mode_getconnector+0x372/0x3c0 [drm]
[ 1015.880864] ? enqueue_hrtimer+0x3d/0x80
[ 1015.880893] drm_ioctl+0x21b/0x4c0 [drm]
[ 1015.880899] ? __set_task_blocked+0x3c/0xa0
[ 1015.880930] ? drm_mode_connector_property_set_ioctl+0x60/0x60 [drm]
[ 1015.880938] do_vfs_ioctl+0xa3/0x600
[ 1015.880943] SyS_ioctl+0x79/0x90
[ 1015.880948] entry_SYSCALL_64_fastpath+0x1e/0xad
[ 1015.880953] RIP: 0033:0x7f583ce33357
[ 1015.880956] RSP: 002b:00007fff98dafbd8 EFLAGS: 00003246 ORIG_RAX: 0000000000000010
[ 1015.880961] RAX: ffffffffffffffda RBX: 0000564866c13550 RCX: 00007f583ce33357
[ 1015.880964] RDX: 00007fff98dafc10 RSI: 00000000c05064a7 RDI: 000000000000000b
[ 1015.880967] RBP: 00007fff98dafc10 R08: 0000564866c13600 R09: 0000000000000000
[ 1015.880969] R10: 0000000000000000 R11: 0000000000003246 R12: 00000000c05064a7
[ 1015.880972] R13: 000000000000000b R14: 00007fff98dafc10 R15: 000000000000000b
[ 1015.881001] ---[ end trace fbecb82af1682910 ]---
[ 1016.065870] ------------[ cut here ]------------
[ 1016.065905] WARNING: CPU: 0 PID: 1017 at /home/kernel/COD/linux/drivers/gpu/drm/drm_irq.c:1237 drm_wait_one_vblank+0x1aa/0x1b0 [drm]
[ 1016.065907] vblank wait timed out on crtc 1
[ 1016.065908] Modules linked in: rfcomm bnep btusb btrtl btbcm btintel bluetooth joydev isight_firmware nls_utf8 hfsplus applesmc input_polldev snd_hda_codec_realtek snd_hda_codec_generic snd_hda_intel snd_hda_codec snd_hda_core snd_hwdep snd_pcm snd_seq_midi snd_seq_midi_event snd_rawmidi coretemp kvm_intel kvm irqbypass snd_seq wl(POE) snd_seq_device snd_timer input_leds appletouch cfg80211 snd lpc_ich soundcore shpchp sbs sbshc mac_hid apple_bl parport_pc ppdev lp parport autofs4 hid_apple hid_appleir hid_generic usbhid hid i915 i2c_algo_bit drm_kms_helper ahci syscopyarea sysfillrect firewire_ohci libahci sysimgblt firewire_core pata_acpi crc_itu_t fb_sys_fops sky2 drm fjes video
[ 1016.065971] CPU: 0 PID: 1017 Comm: Xorg Tainted: P W OE 4.10.0-041000-generic #201702191831
[ 1016.065972] Hardware name: Apple Inc. MacBook4,1/Mac-F22788A9, BIOS MB41.88Z.00C1.B00.0802091535 02/09/08
[ 1016.065973] Call Trace:
[ 1016.065979] dump_stack+0x63/0x81
[ 1016.065982] __warn+0xcb/0xf0
[ 1016.065983] warn_slowpath_fmt+0x5f/0x80
[ 1016.065986] ? finish_wait+0x56/0x70
[ 1016.065995] drm_wait_one_vblank+0x1aa/0x1b0 [drm]
[ 1016.065997] ? wake_atomic_t_function+0x60/0x60
[ 1016.066043] intel_pre_plane_update+0x10a/0x150 [i915]
[ 1016.066068] intel_atomic_commit_tail+0xe8/0xfe0 [i915]
[ 1016.066093] intel_atomic_commit+0x3bc/0x4e0 [i915]
[ 1016.066095] ? finish_wait+0x56/0x70
[ 1016.066106] drm_atomic_commit+0x4b/0x50 [drm]
[ 1016.066131] intel_release_load_detect_pipe+0x50/0xb0 [i915]
[ 1016.066155] intel_tv_detect+0x38e/0x550 [i915]
[ 1016.066166] drm_helper_probe_single_connector_modes+0x2c4/0x520 [drm_kms_helper]
[ 1016.066177] ? drm_mode_object_get_properties+0xdd/0x100 [drm]
[ 1016.066179] ? mutex_lock+0x12/0x40
[ 1016.066190] drm_mode_getconnector+0x372/0x3c0 [drm]
[ 1016.066192] ? enqueue_hrtimer+0x3d/0x80
[ 1016.066202] drm_ioctl+0x21b/0x4c0 [drm]
[ 1016.066204] ? __set_task_blocked+0x3c/0xa0
[ 1016.066215] ? drm_mode_connector_property_set_ioctl+0x60/0x60 [drm]
[ 1016.066218] do_vfs_ioctl+0xa3/0x600
[ 1016.066219] SyS_ioctl+0x79/0x90
[ 1016.066221] entry_SYSCALL_64_fastpath+0x1e/0xad
[ 1016.066223] RIP: 0033:0x7f583ce33357
[ 1016.066224] RSP: 002b:00007fff98dafbd8 EFLAGS: 00003246 ORIG_RAX: 0000000000000010
[ 1016.066226] RAX: ffffffffffffffda RBX: 0000564866c13550 RCX: 00007f583ce33357
[ 1016.066227] RDX: 00007fff98dafc10 RSI: 00000000c05064a7 RDI: 000000000000000b
[ 1016.066228] RBP: 00007fff98dafc10 R08: 0000564866c13600 R09: 0000000000000000
[ 1016.066229] R10: 0000000000000000 R11: 0000000000003246 R12: 00000000c05064a7
[ 1016.066230] R13: 000000000000000b R14: 00007fff98dafc10 R15: 000000000000000b
[ 1016.066231] ---[ end trace fbecb82af1682911 ]---
O congelamento é fácil de reproduzir, abrindo as configurações do sistema. Alguma idéia?