Hi, (This is the first time I report an issue here so I'm sorry if I'm doing something totally wrong (likely)).
I have a new skylake system with i7-6700k. I have some issues running ArchLinux and the 4.2 kernel with the intel graphic driver (hang on ioctl call etc) and have seen the computer spontaneously shuts off (which may or may not be related to the graphic issue). I know there's a lot of fixes in the master so I decided to see if I can have any luck. I'm not sure if the git version resolved my issue but I did notice that I see a warning printed at boot time that I didn't see before (see the dmesg output below). The display manager (sddm) also refuse to start at first complaining X "stopped" but could start if I restart it from the terminal. I also attached the output of `lspci -v` in case it is useful. Yichao Yu ------------------------------------------ [ 2.022862] [drm] failed to retrieve link info, disabling eDP [ 2.023205] ------------[ cut here ]------------ [ 2.023221] WARNING: CPU: 0 PID: 249 at drivers/gpu/drm/i915/intel_pm.c:3325 skl_update_pipe_wm+0x81d/0x830 [i915]() [ 2.023222] WARN_ON(p->pixel_rate == 0) [ 2.023222] Modules linked in: [ 2.023223] nls_iso8859_1 nls_cp437 vfat fat intel_rapl iosf_mbi x86_pkg_temp_thermal coretemp kvm_intel evdev mac_hid mxm_wmi kvm crct10dif_pclmul crc32_pclmul crc32c_intel ghash_clmulni_intel snd_hda_intel(+) i915(+) snd_hda_codec aesni_intel aes_x86_64 lrw snd_hda_core gf128mul glue_helper snd_hwdep ablk_helper cryptd psmouse snd_pcm serio_raw drm_kms_helper snd_timer e1000e pcspkr snd drm ptp soundcore pps_core alx i2c_i801 hci_uart intel_gtt mdio btbcm syscopyarea sysfillrect btqca sysimgblt btintel fb_sys_fops mei_me i2c_algo_bit shpchp mei fan thermal battery bluetooth wmi video rfkill pinctrl_sunrisepoint i2c_hid pinctrl_intel hid acpi_als tpm_infineon kfifo_buf tpm_tis tpm industrialio acpi_pad button processor sch_fq_codel ip_tables x_tables ext4 crc16 mbcache jbd2 sd_mod atkbd libps2 [ 2.023249] ahci libahci xhci_pci libata xhci_hcd usbcore scsi_mod usb_common i8042 serio [ 2.023253] CPU: 0 PID: 249 Comm: systemd-udevd Not tainted 4.2.0-g12f03ee #1 [ 2.023254] Hardware name: Gigabyte Technology Co., Ltd. To be filled by O.E.M./Z170X-Gaming 7, BIOS F3 08/03/2015 [ 2.023255] 0000000000000000 00000000807cdaa9 ffff88086c137380 ffffffff812b4819 [ 2.023256] ffff88086c1373c8 ffff88086c1373b8 ffffffff81074e92 0000000000000000 [ 2.023257] ffff88086c1376a6 ffff88086c1376a0 0000000000000002 0000000000000007 [ 2.023258] Call Trace: [ 2.023262] [<ffffffff812b4819>] dump_stack+0x4b/0x72 [ 2.023264] [<ffffffff81074e92>] warn_slowpath_common+0x82/0xc0 [ 2.023265] [<ffffffff81074f2c>] warn_slowpath_fmt+0x5c/0x80 [ 2.023277] [<ffffffffa072d6fd>] skl_update_pipe_wm+0x81d/0x830 [i915] [ 2.023286] [<ffffffffa072dc14>] skl_update_wm+0x154/0x740 [i915] [ 2.023289] [<ffffffff81462257>] ? __alloc_skb+0x87/0x210 [ 2.023298] [<ffffffffa072e293>] skl_update_sprite_wm+0x93/0x100 [i915] [ 2.023308] [<ffffffffa07320d2>] intel_update_sprite_watermarks+0x32/0x40 [i915] [ 2.023322] [<ffffffffa07a1b52>] skl_disable_plane+0xc2/0xe0 [i915] [ 2.023336] [<ffffffffa07957cd>] intel_modeset_setup_hw_state+0x42d/0xd60 [i915] [ 2.023350] [<ffffffffa0797d50>] intel_modeset_init+0xb60/0x1aa0 [i915] [ 2.023365] [<ffffffffa07cef9b>] i915_driver_load+0xccb/0x1440 [i915] [ 2.023367] [<ffffffff814a3566>] ? netlink_broadcast_filtered+0x136/0x3b0 [ 2.023368] [<ffffffff812b7ca0>] ? kobj_ns_drop+0x50/0x50 [ 2.023370] [<ffffffff812b7f9c>] ? kobject_uevent_env+0x15c/0x4f0 [ 2.023371] [<ffffffff813ce7f7>] ? get_device+0x17/0x20 [ 2.023373] [<ffffffff813d49e5>] ? klist_class_dev_get+0x15/0x20 [ 2.023375] [<ffffffff815623e7>] ? klist_node_init+0x37/0x50 [ 2.023376] [<ffffffff813d0417>] ? device_add+0x237/0x670 [ 2.023379] [<ffffffffa03c74d7>] drm_dev_register+0xa7/0xb0 [drm] [ 2.023382] [<ffffffffa03c9c63>] drm_get_pci_dev+0xd3/0x1e0 [drm] [ 2.023392] [<ffffffffa071d2d4>] i915_pci_probe+0x34/0x50 [i915] [ 2.023394] [<ffffffff812f9ce5>] local_pci_probe+0x45/0xa0 [ 2.023396] [<ffffffff812f9c30>] ? pci_match_device+0xe0/0x110 [ 2.023397] [<ffffffff812fae73>] pci_device_probe+0x103/0x150 [ 2.023398] [<ffffffff813d3b02>] driver_probe_device+0x222/0x490 [ 2.023400] [<ffffffff813d3df4>] __driver_attach+0x84/0x90 [ 2.023401] [<ffffffff813d3d70>] ? driver_probe_device+0x490/0x490 [ 2.023402] [<ffffffff813d173c>] bus_for_each_dev+0x6c/0xc0 [ 2.023403] [<ffffffff813d32be>] driver_attach+0x1e/0x20 [ 2.023404] [<ffffffff813d2e0b>] bus_add_driver+0x1eb/0x280 [ 2.023406] [<ffffffff813d4700>] driver_register+0x60/0xe0 [ 2.023407] [<ffffffff812f955c>] __pci_register_driver+0x4c/0x50 [ 2.023410] [<ffffffffa03c9e50>] drm_pci_init+0xe0/0x110 [drm] [ 2.023411] [<ffffffffa0826000>] ? 0xffffffffa0826000 [ 2.023420] [<ffffffffa08260a4>] i915_init+0xa4/0xab [i915] [ 2.023422] [<ffffffff81002123>] do_one_initcall+0xb3/0x200 [ 2.023424] [<ffffffff81158200>] do_init_module+0x5f/0x1ef [ 2.023425] [<ffffffff810f98c7>] load_module+0x2197/0x27e0 [ 2.023426] [<ffffffff810f6710>] ? symbol_put_addr+0x40/0x40 [ 2.023428] [<ffffffff8156c394>] ? preempt_schedule_irq+0x44/0x70 [ 2.023429] [<ffffffff810fa05e>] SyS_init_module+0x14e/0x190 [ 2.023431] [<ffffffff8156f9ee>] entry_SYSCALL_64_fastpath+0x12/0x71 [ 2.023432] ---[ end trace 2f3d15e019b0a238 ]--- [ 2.023471] [drm:drm_calc_timestamping_constants [drm]] *ERROR* crtc 21: Can't calculate constants, dotclock = 0! 00:00.0 Host bridge: Intel Corporation Sky Lake Host Bridge/DRAM Registers (rev 07) Subsystem: Gigabyte Technology Co., Ltd Device 5000 Flags: bus master, fast devsel, latency 0 Capabilities: <access denied> 00:02.0 VGA compatible controller: Intel Corporation Sky Lake Integrated Graphics (rev 06) (prog-if 00 [VGA controller]) DeviceName: Onboard IGD Subsystem: Gigabyte Technology Co., Ltd Device d000 Flags: bus master, fast devsel, latency 0, IRQ 140 Memory at db000000 (64-bit, non-prefetchable) [size=16M] Memory at 90000000 (64-bit, prefetchable) [size=256M] I/O ports at f000 [size=64] Expansion ROM at <unassigned> [disabled] Capabilities: <access denied> Kernel driver in use: i915 Kernel modules: i915 00:14.0 USB controller: Intel Corporation Sunrise Point-H USB 3.0 xHCI Controller (rev 31) (prog-if 30 [XHCI]) Subsystem: Gigabyte Technology Co., Ltd Device 5007 Flags: bus master, medium devsel, latency 0, IRQ 132 Memory at dc330000 (64-bit, non-prefetchable) [size=64K] Capabilities: <access denied> Kernel driver in use: xhci_hcd Kernel modules: xhci_pci 00:14.2 Signal processing controller: Intel Corporation Sunrise Point-H Thermal subsystem (rev 31) Subsystem: Gigabyte Technology Co., Ltd Device 8888 Flags: fast devsel, IRQ 14 Memory at dc34e000 (64-bit, non-prefetchable) [size=4K] Capabilities: <access denied> 00:16.0 Communication controller: Intel Corporation Sunrise Point-H CSME HECI #1 (rev 31) Subsystem: Gigabyte Technology Co., Ltd Device 1c3a Flags: bus master, fast devsel, latency 0, IRQ 137 Memory at dc34d000 (64-bit, non-prefetchable) [size=4K] Capabilities: <access denied> Kernel driver in use: mei_me Kernel modules: mei_me 00:17.0 SATA controller: Intel Corporation Device a102 (rev 31) (prog-if 01 [AHCI 1.0]) Subsystem: Gigabyte Technology Co., Ltd Device b005 Flags: bus master, 66MHz, medium devsel, latency 0, IRQ 133 Memory at dc348000 (32-bit, non-prefetchable) [size=8K] Memory at dc34c000 (32-bit, non-prefetchable) [size=256] I/O ports at f090 [size=8] I/O ports at f080 [size=4] I/O ports at f060 [size=32] Memory at dc34b000 (32-bit, non-prefetchable) [size=2K] Capabilities: <access denied> Kernel driver in use: ahci Kernel modules: ahci 00:1b.0 PCI bridge: Intel Corporation Sunrise Point-H PCI Root Port #17 (rev f1) (prog-if 00 [Normal decode]) Flags: bus master, fast devsel, latency 0, IRQ 120 Bus: primary=00, secondary=01, subordinate=01, sec-latency=0 Capabilities: <access denied> Kernel driver in use: pcieport Kernel modules: shpchp 00:1b.3 PCI bridge: Intel Corporation Sunrise Point-H PCI Root Port #20 (rev f1) (prog-if 00 [Normal decode]) Flags: bus master, fast devsel, latency 0, IRQ 121 Bus: primary=00, secondary=02, subordinate=02, sec-latency=0 I/O behind bridge: 0000e000-0000efff Memory behind bridge: dc200000-dc2fffff Capabilities: <access denied> Kernel driver in use: pcieport Kernel modules: shpchp 00:1c.0 PCI bridge: Intel Corporation Sunrise Point-H PCI Express Root Port #1 (rev f1) (prog-if 00 [Normal decode]) Flags: bus master, fast devsel, latency 0, IRQ 122 Bus: primary=00, secondary=03, subordinate=03, sec-latency=0 I/O behind bridge: 00002000-00002fff Memory behind bridge: 6d000000-6d1fffff Prefetchable memory behind bridge: 000000006d200000-000000006d3fffff Capabilities: <access denied> Kernel driver in use: pcieport Kernel modules: shpchp 00:1c.2 PCI bridge: Intel Corporation Sunrise Point-H PCI Express Root Port #3 (rev f1) (prog-if 00 [Normal decode]) Flags: bus master, fast devsel, latency 0, IRQ 123 Bus: primary=00, secondary=04, subordinate=04, sec-latency=0 I/O behind bridge: 0000d000-0000dfff Memory behind bridge: dc100000-dc1fffff Capabilities: <access denied> Kernel driver in use: pcieport Kernel modules: shpchp 00:1c.4 PCI bridge: Intel Corporation Sunrise Point-H PCI Express Root Port #5 (rev f1) (prog-if 00 [Normal decode]) Flags: bus master, fast devsel, latency 0, IRQ 124 Bus: primary=00, secondary=05, subordinate=6f, sec-latency=0 I/O behind bridge: 00003000-00004fff Memory behind bridge: c4000000-da0fffff Prefetchable memory behind bridge: 00000000a0000000-00000000c1ffffff Capabilities: <access denied> Kernel driver in use: pcieport Kernel modules: shpchp 00:1d.0 PCI bridge: Intel Corporation Sunrise Point-H PCI Express Root Port #9 (rev f1) (prog-if 00 [Normal decode]) Flags: bus master, fast devsel, latency 0, IRQ 125 Bus: primary=00, secondary=70, subordinate=70, sec-latency=0 I/O behind bridge: 00005000-00005fff Memory behind bridge: 6d400000-6d5fffff Prefetchable memory behind bridge: 000000006d600000-000000006d7fffff Capabilities: <access denied> Kernel driver in use: pcieport Kernel modules: shpchp 00:1d.4 PCI bridge: Intel Corporation Sunrise Point-H PCI Express Root Port #13 (rev f1) (prog-if 00 [Normal decode]) Flags: bus master, fast devsel, latency 0, IRQ 126 Bus: primary=00, secondary=71, subordinate=71, sec-latency=0 Memory behind bridge: dc000000-dc0fffff Capabilities: <access denied> Kernel driver in use: pcieport Kernel modules: shpchp 00:1f.0 ISA bridge: Intel Corporation Sunrise Point-H LPC Controller (rev 31) Subsystem: Gigabyte Technology Co., Ltd Device 5001 Flags: bus master, medium devsel, latency 0 00:1f.2 Memory controller: Intel Corporation Sunrise Point-H PMC (rev 31) Subsystem: Gigabyte Technology Co., Ltd Device 5001 Flags: bus master, fast devsel, latency 0 Memory at dc344000 (32-bit, non-prefetchable) [size=16K] 00:1f.3 Audio device: Intel Corporation Sunrise Point-H HD Audio (rev 31) Subsystem: Gigabyte Technology Co., Ltd Device a036 Flags: bus master, fast devsel, latency 32, IRQ 141 Memory at dc340000 (64-bit, non-prefetchable) [size=16K] Memory at dc320000 (64-bit, non-prefetchable) [size=64K] Capabilities: <access denied> Kernel driver in use: snd_hda_intel Kernel modules: snd_hda_intel 00:1f.4 SMBus: Intel Corporation Sunrise Point-H SMBus (rev 31) Subsystem: Gigabyte Technology Co., Ltd Device 5001 Flags: medium devsel Memory at dc34a000 (64-bit, non-prefetchable) [size=256] I/O ports at f040 [size=32] Kernel modules: i2c_i801 00:1f.6 Ethernet controller: Intel Corporation Ethernet Connection (2) I219-V (rev 31) Subsystem: Gigabyte Technology Co., Ltd Device e000 Flags: bus master, fast devsel, latency 0, IRQ 138 Memory at dc300000 (32-bit, non-prefetchable) [size=128K] Capabilities: <access denied> Kernel driver in use: e1000e Kernel modules: e1000e 02:00.0 SATA controller: ASMedia Technology Inc. ASM1062 Serial ATA Controller (rev 02) (prog-if 01 [AHCI 1.0]) Subsystem: ASMedia Technology Inc. Device 1062 Flags: bus master, fast devsel, latency 0, IRQ 135 I/O ports at e050 [size=8] I/O ports at e040 [size=4] I/O ports at e030 [size=8] I/O ports at e020 [size=4] I/O ports at e000 [size=32] Memory at dc210000 (32-bit, non-prefetchable) [size=512] Expansion ROM at dc200000 [disabled] [size=64K] Capabilities: <access denied> Kernel driver in use: ahci Kernel modules: ahci 04:00.0 Ethernet controller: Qualcomm Atheros Device e0a1 (rev 10) Subsystem: Gigabyte Technology Co., Ltd Device e000 Flags: bus master, fast devsel, latency 0, IRQ 139 Memory at dc100000 (64-bit, non-prefetchable) [size=256K] I/O ports at d000 [size=128] Capabilities: <access denied> Kernel driver in use: alx Kernel modules: alx 05:00.0 PCI bridge: Intel Corporation Device 1578 (rev 03) (prog-if 00 [Normal decode]) Physical Slot: 8 Flags: bus master, fast devsel, latency 0, IRQ 127 Bus: primary=05, secondary=06, subordinate=0a, sec-latency=0 I/O behind bridge: 00003000-00004fff Memory behind bridge: c4000000-c44fffff Prefetchable memory behind bridge: 00000000a0000000-00000000a03fffff Capabilities: <access denied> Kernel driver in use: pcieport Kernel modules: shpchp 06:00.0 PCI bridge: Intel Corporation Device 1578 (rev 03) (prog-if 00 [Normal decode]) Flags: bus master, fast devsel, latency 0, IRQ 128 Bus: primary=06, secondary=07, subordinate=07, sec-latency=0 Capabilities: <access denied> Kernel driver in use: pcieport Kernel modules: shpchp 06:01.0 PCI bridge: Intel Corporation Device 1578 (rev 03) (prog-if 00 [Normal decode]) Flags: bus master, fast devsel, latency 0, IRQ 129 Bus: primary=06, secondary=08, subordinate=08, sec-latency=0 I/O behind bridge: 00003000-00003fff Memory behind bridge: c4000000-c41fffff Prefetchable memory behind bridge: 00000000a0000000-00000000a01fffff Capabilities: <access denied> Kernel driver in use: pcieport Kernel modules: shpchp 06:02.0 PCI bridge: Intel Corporation Device 1578 (rev 03) (prog-if 00 [Normal decode]) Flags: bus master, fast devsel, latency 0, IRQ 130 Bus: primary=06, secondary=09, subordinate=09, sec-latency=0 Memory behind bridge: c4200000-c42fffff Capabilities: <access denied> Kernel driver in use: pcieport Kernel modules: shpchp 06:04.0 PCI bridge: Intel Corporation Device 1578 (rev 03) (prog-if 00 [Normal decode]) Flags: bus master, fast devsel, latency 0, IRQ 131 Bus: primary=06, secondary=0a, subordinate=0a, sec-latency=0 I/O behind bridge: 00004000-00004fff Memory behind bridge: c4300000-c44fffff Prefetchable memory behind bridge: 00000000a0200000-00000000a03fffff Capabilities: <access denied> Kernel driver in use: pcieport Kernel modules: shpchp 09:00.0 USB controller: Intel Corporation Device 15b6 (rev 03) (prog-if 30 [XHCI]) Subsystem: Device 2222:1111 Flags: bus master, fast devsel, latency 0, IRQ 134 Memory at c4200000 (32-bit, non-prefetchable) [size=64K] Capabilities: <access denied> Kernel driver in use: xhci_hcd Kernel modules: xhci_pci 71:00.0 SATA controller: Samsung Electronics Co Ltd Device a801 (rev 01) (prog-if 01 [AHCI 1.0]) Subsystem: Samsung Electronics Co Ltd Device a801 Flags: bus master, fast devsel, latency 0, IRQ 136 Memory at dc000000 (32-bit, non-prefetchable) [size=8K] Capabilities: <access denied> Kernel driver in use: ahci Kernel modules: ahci -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/