Hello, currently have: Kernel: 4.2.0-rc6 OS: Debian 8 (Jessie) xserver-xorg: 1:7.7+9 Hardware: ThinkPad X1C3 I've faced a strange issue with random screen blanks and completely unresponsiveness of my system after upgrade to rc6 from rc4. I could find following strack trace in the logs: ====================== Aug 17 15:47:19 x kernel: ------------[ cut here ]------------ Aug 17 15:47:19 x kernel: WARNING: CPU: 3 PID: 793 at drivers/gpu/drm/drm_irq.c:1162 drm_wait_one_vblank+0x52/0x155() Aug 17 15:47:19 x kernel: vblank not available on crtc 0, ret=-22 Aug 17 15:47:19 x kernel: Modules linked in: Aug 17 15:47:19 x kernel: CPU: 3 PID: 793 Comm: kworker/3:1 Tainted: G W 4.2.0-rc6 #73 Aug 17 15:47:19 x kernel: Hardware name: LENOVO 20BSCTO1WW/20BSCTO1WW, BIOS N14ET28W (1.06 ) 03/12/2015 Aug 17 15:47:19 x kernel: Workqueue: events output_poll_execute Aug 17 15:47:19 x kernel: 0000000000000000 000000004f3d23ad ffff8800ba7afa28 ffffffff81691b72 Aug 17 15:47:19 x kernel: 0000000000000000 ffff8800ba7afa80 ffff8800ba7afa68 ffffffff8104658e Aug 17 15:47:19 x kernel: ffff8800ba7afa58 ffffffff813b0856 0000000000000000 ffff8800ba720000 Aug 17 15:47:19 x kernel: Call Trace: Aug 17 15:47:19 x kernel: [<ffffffff81691b72>] dump_stack+0x4f/0x7b Aug 17 15:47:19 x kernel: [<ffffffff8104658e>] warn_slowpath_common+0xa1/0xbb Aug 17 15:47:19 x kernel: [<ffffffff813b0856>] ? drm_wait_one_vblank+0x52/0x155 Aug 17 15:47:19 x kernel: [<ffffffff810465fd>] warn_slowpath_fmt+0x55/0x6b Aug 17 15:47:19 x kernel: [<ffffffff813b0856>] drm_wait_one_vblank+0x52/0x155 Aug 17 15:47:19 x kernel: [<ffffffff81428e85>] intel_finish_crtc_commit+0x4d/0x111 Aug 17 15:47:19 x kernel: [<ffffffff813a5bb3>] drm_atomic_helper_commit_planes+0x15d/0x198 Aug 17 15:47:19 x kernel: [<ffffffff8142a004>] __intel_set_mode+0x87b/0x914 Aug 17 15:47:19 x kernel: [<ffffffff81430166>] intel_crtc_set_config+0x421/0x573 Aug 17 15:47:19 x kernel: [<ffffffff813b7b3e>] drm_mode_set_config_internal+0x5c/0xe8 Aug 17 15:47:19 x kernel: [<ffffffff813a87da>] restore_fbdev_mode+0xba/0xd4 Aug 17 15:47:19 x kernel: [<ffffffff813aa12b>] drm_fb_helper_restore_fbdev_mode_unlocked+0x27/0x5e Aug 17 15:47:19 x kernel: [<ffffffff813aa198>] drm_fb_helper_set_par+0x36/0x3a Aug 17 15:47:19 x kernel: [<ffffffff813aa0fd>] drm_fb_helper_hotplug_event+0xab/0xb2 Aug 17 15:47:19 x kernel: [<ffffffff8143d62b>] intel_fbdev_output_poll_changed+0x1e/0x20 Aug 17 15:47:19 x kernel: [<ffffffff813a048d>] drm_kms_helper_hotplug_event+0x28/0x2c Aug 17 15:47:19 x kernel: [<ffffffff813a05f3>] output_poll_execute+0x132/0x15f Aug 17 15:47:19 x kernel: [<ffffffff8105b37e>] process_one_work+0x1b3/0x352 Aug 17 15:47:19 x kernel: [<ffffffff8105c24a>] worker_thread+0x273/0x35b Aug 17 15:47:19 x kernel: [<ffffffff8105bfd7>] ? rescuer_thread+0x2a6/0x2a6 Aug 17 15:47:19 x kernel: [<ffffffff81060464>] kthread+0xe1/0xe9 Aug 17 15:47:19 x kernel: [<ffffffff81698639>] ? _raw_spin_unlock_irq+0x17/0x29 Aug 17 15:47:19 x kernel: [<ffffffff81060383>] ? kthread_create_on_node+0x1aa/0x1aa Aug 17 15:47:19 x kernel: [<ffffffff816990df>] ret_from_fork+0x3f/0x70 Aug 17 15:47:19 x kernel: [<ffffffff81060383>] ? kthread_create_on_node+0x1aa/0x1aa Aug 17 15:47:19 x kernel: ---[ end trace 671fd07ef0ab77b7 ]--- ============================= lsmod: ====================== x ~ $ lsmod Module Size Used by cdc_ether 16384 0 usbnet 32768 1 cdc_ether mii 16384 1 usbnet ccm 20480 2 xt_conntrack 16384 1 ipt_MASQUERADE 16384 1 nf_nat_masquerade_ipv4 16384 1 ipt_MASQUERADE iptable_nat 16384 1 nf_conntrack_ipv4 20480 2 nf_defrag_ipv4 16384 1 nf_conntrack_ipv4 nf_nat_ipv4 16384 1 iptable_nat xt_addrtype 16384 2 iptable_filter 16384 1 ip_tables 24576 2 iptable_filter,iptable_nat x_tables 28672 5 ip_tables,ipt_MASQUERADE,xt_conntrack,iptable_filter,xt_addrtype br_netfilter 20480 0 nf_nat 24576 2 nf_nat_ipv4,nf_nat_masquerade_ipv4 nf_conntrack 90112 5 nf_nat,nf_nat_ipv4,xt_conntrack,nf_nat_masquerade_ipv4,nf_conntrack_ipv4 bridge 102400 1 br_netfilter stp 16384 1 bridge llc 16384 2 stp,bridge vboxpci 20480 0 vboxnetadp 28672 0 vboxnetflt 24576 0 overlay 36864 0 vboxdrv 421888 3 vboxnetadp,vboxnetflt,vboxpci arc4 16384 2 btusb 36864 0 btrtl 16384 1 btusb coretemp 16384 0 btbcm 16384 1 btusb btintel 16384 1 btusb intel_powerclamp 16384 0 kvm_intel 155648 0 snd_hda_codec_generic 61440 1 kvm 458752 1 kvm_intel iwlmvm 274432 0 snd_hda_codec_hdmi 45056 1 mac80211 692224 1 iwlmvm psmouse 69632 0 snd_hda_intel 36864 0 iwlwifi 176128 1 iwlmvm snd_hda_codec 114688 3 snd_hda_codec_hdmi,snd_hda_codec_generic,snd_hda_intel tpm_tis 20480 0 sg 32768 0 snd_hwdep 16384 1 snd_hda_codec cfg80211 499712 3 iwlwifi,mac80211,iwlmvm snd_hda_core 61440 4 snd_hda_codec_hdmi,snd_hda_codec_generic,snd_hda_codec,snd_hda_intel battery 20480 0 ac 16384 0 tpm 40960 2 tpm_tis uvcvideo 77824 0 videobuf2_vmalloc 16384 1 uvcvideo videobuf2_memops 16384 1 videobuf2_vmalloc videobuf2_core 45056 1 uvcvideo thinkpad_acpi 77824 0 hwmon 16384 2 coretemp,thinkpad_acpi acpi_call 16384 0 ipv6 348160 37 bridge e1000e 163840 0 xhci_pci 16384 0 ptp 20480 1 e1000e pps_core 16384 1 ptp xhci_hcd 110592 1 xhci_pci =================== lspci: =================== 00:00.0 Host bridge: Intel Corporation Broadwell-U Host Bridge -OPI (rev 09) 00:02.0 VGA compatible controller: Intel Corporation Broadwell-U Integrated Graphics (rev 09) 00:03.0 Audio device: Intel Corporation Broadwell-U Audio Controller (rev 09) 00:14.0 USB controller: Intel Corporation Wildcat Point-LP USB xHCI Controller (rev 03) 00:16.0 Communication controller: Intel Corporation Wildcat Point-LP MEI Controller #1 (rev 03) 00:19.0 Ethernet controller: Intel Corporation Ethernet Connection (3) I218-LM (rev 03) 00:1b.0 Audio device: Intel Corporation Wildcat Point-LP High Definition Audio Controller (rev 03) 00:1c.0 PCI bridge: Intel Corporation Wildcat Point-LP PCI Express Root Port #2 (rev e3) 00:1c.1 PCI bridge: Intel Corporation Wildcat Point-LP PCI Express Root Port #3 (rev e3) 00:1c.5 PCI bridge: Intel Corporation Wildcat Point-LP PCI Express Root Port #6 (rev e3) 00:1d.0 USB controller: Intel Corporation Wildcat Point-LP USB EHCI Controller (rev 03) 00:1f.0 ISA bridge: Intel Corporation Wildcat Point-LP LPC Controller (rev 03) 00:1f.3 SMBus: Intel Corporation Wildcat Point-LP SMBus Controller (rev 03) 00:1f.6 Signal processing controller: Intel Corporation Wildcat Point-LP Thermal Management Controller (rev 03) 04:00.0 Network controller: Intel Corporation Wireless 7265 (rev 59) 0a:00.0 SATA controller: Samsung Electronics Co Ltd Device a801 (rev 01) ================= lsusb: ================= Bus 001 Device 002: ID 8087:8001 Intel Corp. Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub Bus 003 Device 004: ID 17ef:304f Lenovo Bus 003 Device 003: ID 2109:0812 VIA Labs, Inc. VL812 Hub Bus 003 Device 002: ID 2109:0812 VIA Labs, Inc. VL812 Hub Bus 003 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub Bus 002 Device 004: ID 04f2:b45d Chicony Electronics Co., Ltd Bus 002 Device 003: ID 8087:0a2a Intel Corp. Bus 002 Device 002: ID 138a:0017 Validity Sensors, Inc. Fingerprint Reader Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub =================
in case you need more info - just let me know, I'll do my best to debug any things out, just tell me what to do.
Guys, this happened on all rc* since rc3 and it's even in 4.2.0: ============= Sep 3 17:37:47 x kernel: cfg80211: Found new beacon on frequency: 5805 MHz (Ch 161) on phy0 Sep 3 17:37:47 x kernel: ------------[ cut here ]------------ Sep 3 17:37:47 x kernel: WARNING: CPU: 3 PID: 0 at drivers/gpu/drm/i915/intel_uncore.c:620 hsw_unclaimed_reg_debug+0x68/0x81() Sep 3 17:37:47 x kernel: Unclaimed register detected before reading register 0x223a0 Sep 3 17:37:47 x kernel: Modules linked in: ccm xt_conntrack ipt_MASQUERADE nf_nat_masquerade_ipv4 iptable_nat nf_conntrack_ipv4 nf_defrag_ipv4 nf_nat_ipv4 xt_addrtype iptable_filter ip_tables x_tables br_netfilter nf_nat nf_conntrack bridge stp llc vboxpci(O) vboxnetadp(O) vboxnetflt(O) overlay vboxdrv(O) uvcvideo videobuf2_vmalloc videobuf2_memops videobuf2_core arc4 btusb btrtl btbcm btintel coretemp intel_powerclamp kvm_intel iwlmvm mac80211 kvm iwlwifi psmouse cfg80211 sg snd_hda_codec_generic snd_hda_codec_hdmi snd_hda_intel snd_hda_codec snd_hwdep snd_hda_core tpm_tis tpm battery ac thinkpad_acpi hwmon acpi_call(O) ipv6 xhci_pci e1000e ptp pps_core xhci_hcd Sep 3 17:37:47 x kernel: CPU: 3 PID: 0 Comm: swapper/3 Tainted: G W O 4.2.0 #77 Sep 3 17:37:47 x kernel: Hardware name: LENOVO 20BSCTO1WW/20BSCTO1WW, BIOS N14ET28W (1.06 ) 03/12/2015 Sep 3 17:37:47 x kernel: 0000000000000000 e2f5b4143be5f0e2 ffff88022dd83c88 ffffffff8168a67d Sep 3 17:37:47 x kernel: 0000000000000000 ffff88022dd83ce0 ffff88022dd83cc8 ffffffff810464bb Sep 3 17:37:47 x kernel: 0000000000000000 ffffffff8140c5af ffff8800ba7e0000 00000000000223a0 Sep 3 17:37:47 x kernel: Call Trace: Sep 3 17:37:47 x kernel: <IRQ> [<ffffffff8168a67d>] dump_stack+0x4f/0x7b Sep 3 17:37:47 x kernel: [<ffffffff810464bb>] warn_slowpath_common+0x9b/0xb5 Sep 3 17:37:47 x kernel: [<ffffffff8140c5af>] ? hsw_unclaimed_reg_debug+0x68/0x81 Sep 3 17:37:47 x kernel: [<ffffffff8104652a>] warn_slowpath_fmt+0x55/0x6b Sep 3 17:37:47 x kernel: [<ffffffff81074e54>] ? load_balance+0x1a6/0x880 Sep 3 17:37:47 x kernel: [<ffffffff8140c5af>] hsw_unclaimed_reg_debug+0x68/0x81 Sep 3 17:37:47 x kernel: [<ffffffff81410e4f>] gen6_read32+0x50/0x167 Sep 3 17:37:47 x kernel: [<ffffffff814054e9>] intel_lrc_irq_handler+0x39/0x199 Sep 3 17:37:47 x kernel: [<ffffffff813fd3bc>] gen8_gt_irq_handler+0x7a/0x1d5 Sep 3 17:37:47 x kernel: [<ffffffff813fd585>] gen8_irq_handler+0x6e/0x3d6 Sep 3 17:37:47 x kernel: [<ffffffff8108d4b9>] handle_irq_event_percpu+0x48/0x19c Sep 3 17:37:47 x kernel: [<ffffffff8108d651>] handle_irq_event+0x44/0x67 Sep 3 17:37:47 x kernel: [<ffffffff8102f951>] ? apic_ack_edge+0x37/0x3b Sep 3 17:37:47 x kernel: [<ffffffff81090479>] handle_edge_irq+0xf5/0x118 Sep 3 17:37:47 x kernel: [<ffffffff810054f7>] handle_irq+0x24/0x2a Sep 3 17:37:47 x kernel: [<ffffffff812e5297>] ? debug_smp_processor_id+0x17/0x19 Sep 3 17:37:47 x kernel: [<ffffffff81693da8>] do_IRQ+0x58/0xe5 Sep 3 17:37:47 x kernel: [<ffffffff81692268>] common_interrupt+0x68/0x68 Sep 3 17:37:47 x kernel: <EOI> [<ffffffff8153cc91>] ? cpuidle_enter_state+0x11b/0x1f8 Sep 3 17:37:47 x kernel: [<ffffffff8153cc56>] ? cpuidle_enter_state+0xe0/0x1f8 Sep 3 17:37:47 x kernel: [<ffffffff8153cd9a>] cpuidle_enter+0x17/0x19 Sep 3 17:37:47 x kernel: [<ffffffff8107b1bc>] call_cpuidle+0x50/0x52 Sep 3 17:37:47 x kernel: [<ffffffff8153cd81>] ? cpuidle_select+0x13/0x15 Sep 3 17:37:47 x kernel: [<ffffffff8107b3d9>] cpu_startup_entry+0x21b/0x308 Sep 3 17:37:47 x kernel: [<ffffffff8102c566>] start_secondary+0x162/0x18f Sep 3 17:37:47 x kernel: ---[ end trace 70e4fd21493d110b ]--- Sep 3 17:37:51 x kernel: IPv6: ADDRCONF(NETDEV_UP): eth0: link is not ready Sep 3 17:38:18 x kernel: cfg80211: Found new beacon on frequency: 2472 MHz (Ch 13) on phy0 ==================== maybe somebody could take a look here?
can't reproduce it with 4.3.0-rc2