On 07/29/2014 07:10 PM, Daniel Vetter wrote: > On Tue, Jul 29, 2014 at 12:14 PM, Ville Syrjälä > wrote: >> On Tue, Jul 29, 2014 at 10:43:02AM +0800, Aaron Lu wrote: >>> FYI, we noticed the below changes on >>> >>> git://people.freedesktop.org/~danvet/drm colder-fusion >> >> Does it happen on -nightly too? Just got a new report from LKP about this with linux-next tree: FYI, we noticed the below changes on git://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master commit b832b65ef7e695eac246c6dcb00316775a7a6cac ("drm/i915: Add chv cmnlane power wells") +-----------------+------------+------------+ | | fac03ecbe8 | b832b65ef7 | +-----------------+------------+------------+ | boot_successes | 10 | 10 | | early-boot-hang | 1 | 1 | +-----------------+------------+------------+ [ 12.287485] sd 3:0:0:0: Attached scsi generic sg0 type 0 [ 12.313542] [drm:vlv_set_power_well] *ERROR* timout setting power well state 03000000 (00000000) [ 12.313545] ------------[ cut here ]------------ [ 12.313577] WARNING: CPU: 1 PID: 248 at drivers/gpu/drm/i915/intel_pm.c:6429 check_power_well_state+0x60/0x90 [i915]() [ 12.313578] state mismatch for 'dpio-common-d' (always_on 0 hw state 1 use-count 0 disable_power_well 1 [ 12.313588] Modules linked in: sg sd_mod crct10dif_generic crct10dif_pclmul crc_t10dif crct10dif_common snd_hda_codec_hdmi snd_hda_codec_realtek snd_hda_codec_generic i915(+) firewire_ohci video serio_raw parport_pc floppy(+) nuvoton_cir parport firewire_core drm_kms_helper snd_hda_intel snd_hda_controller crc_itu_t rc_core snd_hda_codec snd_hwdep i2c_i801 snd_pcm drm ata_generic ahci pcspkr pata_acpi libahci snd_timer snd libata soundcore [ 12.313590] CPU: 1 PID: 248 Comm: modprobe Not tainted 3.16.0-rc7-wl-02343-g9cca6ad #1 [ 12.313590] Hardware name: /DQ67SW, BIOS SWQ6710H.86A.0047.2011.0222.1058 02/22/2011 [ 12.313592] 0000000000000009 ffff88007faab2f8 ffffffff81836031 ffff88007faab340 [ 12.313593] ffff88007faab330 ffffffff8106d18d ffffffffa02a1860 ffffffffa02a1860 [ 12.313594] 0000000001000000 ffff88007f038568 ffff88007f030000 ffff88007faab390 [ 12.313594] Call Trace: [ 12.313598] [] dump_stack+0x4d/0x66 [ 12.313601] [] warn_slowpath_common+0x7d/0xa0 [ 12.313603] [] warn_slowpath_fmt+0x4c/0x50 [ 12.313614] [] ? vlv_power_well_enabled+0x7d/0xa0 [i915] [ 12.313624] [] check_power_well_state+0x60/0x90 [i915] [ 12.313635] [] intel_display_power_put+0xe5/0x160 [i915] [ 12.313653] [] intel_display_set_init_power+0x2a/0x50 [i915] [ 12.313666] [] modeset_update_crtc_power_domains+0xf2/0x150 [i915] [ 12.313678] [] snb_modeset_global_resources+0xe/0x10 [i915] [ 12.313689] [] __intel_set_mode+0x5d8/0xab0 [i915] [ 12.313701] [] intel_set_mode+0x16/0x30 [i915] [ 12.313712] [] intel_crtc_set_config+0x92c/0xe60 [i915] [ 12.313723] [] drm_mode_set_config_internal+0x64/0xf0 [drm] [ 12.313727] [] restore_fbdev_mode+0xb3/0xe0 [drm_kms_helper] [ 12.313730] [] drm_fb_helper_restore_fbdev_mode_unlocked+0x23/0x40 [drm_kms_helper] [ 12.313733] [] drm_fb_helper_set_par+0x28/0x70 [drm_kms_helper] [ 12.313747] [] intel_fbdev_set_par+0x1a/0x60 [i915] [ 12.313749] [] fbcon_init+0x4f4/0x580 [ 12.313751] [] visual_init+0xb8/0x120 [ 12.313753] [] do_bind_con_driver+0x163/0x330 [ 12.313755] [] do_take_over_console+0x114/0x1c0 [ 12.313756] [] do_fbcon_takeover+0x63/0xd0 [ 12.313757] [] fbcon_event_notify+0x68d/0x7e0 [ 12.313759] [] notifier_call_chain+0x4c/0x70 [ 12.313761] [] __blocking_notifier_call_chain+0x4d/0x70 [ 12.313762] [] blocking_notifier_call_chain+0x16/0x20 [ 12.313764] [] fb_notifier_call_chain+0x1b/0x20 [ 12.313765] [] register_framebuffer+0x1e6/0x320 [ 12.313768] [] drm_fb_helper_initial_config+0x2fe/0x4b0 [drm_kms_helper] [ 12.313780] [] ? gen6_write32+0x6a/0x120 [i915] [ 12.313793] [] intel_fbdev_initial_config+0x1f/0x30 [i915] [ 12.313808] [] i915_driver_load+0xfbd/0x1050 [i915] [ 12.313810] [] ? kobject_uevent_env+0x178/0x690 [ 12.313811] [] ? get_device+0x17/0x30 [ 12.313813] [] ? klist_class_dev_get+0x15/0x20 [ 12.313815] [] ? klist_add_tail+0x3a/0x40 [ 12.313816] [] ? device_add+0x1f9/0x610 [ 12.313823] [] ? drm_sysfs_device_add+0xd6/0x120 [drm] [ 12.313830] [] drm_dev_register+0xad/0x100 [drm] [ 12.313835] [] drm_get_pci_dev+0x8f/0x1f0 [drm] [ 12.313847] [] i915_pci_probe+0x3b/0x60 [i915] [ 12.313850] [] local_pci_probe+0x45/0xa0 [ 12.313851] [] ? pci_match_device+0xe5/0x110 [ 12.313852] [] pci_device_probe+0xd1/0x130 [ 12.313854] [] driver_probe_device+0x90/0x3c0 [ 12.313855] [] __driver_attach+0x93/0xa0 [ 12.313856] [] ? __device_attach+0x40/0x40 [ 12.313857] [] bus_for_each_dev+0x63/0xa0 [ 12.313859] [] driver_attach+0x1e/0x20 [ 12.313860] [] bus_add_driver+0x180/0x250 [ 12.313861] [] driver_register+0x64/0xf0 [ 12.313863] [] __pci_register_driver+0x4c/0x50 [ 12.313869] [] drm_pci_init+0x10a/0x140 [drm] [ 12.313870] [] ? 0xffffffffa02c7fff [ 12.313881] [] i915_init+0x89/0x90 [i915] [ 12.313883] [] do_one_initcall+0xbc/0x1f0 [ 12.313885] [] ? __vunmap+0xb2/0x100 [ 12.313887] [] load_module+0x15fc/0x1a30 [ 12.313889] [] ? store_uevent+0x40/0x40 [ 12.313891] [] ? __vmalloc_node_range+0xbc/0x270 [ 12.313893] [] SyS_init_module+0xc1/0x110 [ 12.313895] [] system_call_fastpath+0x16/0x1b [ 12.313895] ---[ end trace 6f8134c1b1b0a071 ]--- [ 12.415667] [drm:vlv_set_power_well] *ERROR* timout setting power well state 00000c00 (00000000) Disclaimer: Results have been estimated based on internal Intel analysis and are provided for informational purposes only. Any difference in system hardware or software design or configuration may affect actual performance.