Updating from gentoo-sources-5.3.10 to 5.3.11, sometimes the desktop hangs for few seconds becoming unresponsive and I get this error in dmesg: [ 36.202250] i915 0000:00:02.0: Resetting rcs0 for hang on rcs0 A way to reproduce this 100% of times is opening at least 2-3 times a document with libreoffice. I tried to get the vanilla sources and go with git bisect (following this: https://wiki.gentoo.org/wiki/Kernel_git-bisect) and I got the incriminated commit: 77fc9100fc5768ca01ca2dd2cc5a515a4723a58a is the first bad commit commit 77fc9100fc5768ca01ca2dd2cc5a515a4723a58a Author: Jon Bloomfield <jon.bloomfield@intel.com> Date: Thu Sep 27 10:23:17 2018 -0700 drm/i915/cmdparser: Use explicit goto for error paths commit 0546a29cd884fb8184731c79ab008927ca8859d0 upstream. In the next patch we will be adding a second valid termination condition which will require a small amount of refactoring to share logic with the BB_END case. Refactor all error conditions to jump to a dedicated exit path, with 'break' reserved only for a successful parse. Cc: Tony Luck <tony.luck@intel.com> Cc: Dave Airlie <airlied@redhat.com> Cc: Takashi Iwai <tiwai@suse.de> Cc: Tyler Hicks <tyhicks@canonical.com> Signed-off-by: Jon Bloomfield <jon.bloomfield@intel.com> Reviewed-by: Chris Wilson <chris.p.wilson@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> drivers/gpu/drm/i915/i915_cmd_parser.c | 25 +++++++++++++------------ 1 file changed, 13 insertions(+), 12 deletions(-) Please patch this or notify upstream in order to avoid this annoying problem. The hangs tend to happen quite frequently. My system: heavensdoor ~ # inxi -Fzm System: Host: heavensdoor Kernel: 5.3.8-gentoo x86_64 bits: 64 Desktop: Xfce 4.14.1 Distro: Gentoo Base System release 2.6 Machine: Type: Laptop System: Notebook product: P9XXRC v: N/A serial: N/A Mobo: Notebook model: P9XXRC serial: N/A UEFI: INSYDE v: 1.07.04 date: 05/03/2019 Battery: ID-1: BAT0 charge: 59.2 Wh condition: 59.2/56.2 Wh (105%) Memory: RAM: total: 31.08 GiB used: 803.1 MiB (2.5%) Array-1: capacity: 32 GiB slots: 2 EC: None Device-1: ChannelA-DIMM0 size: 16 GiB speed: 3000 MT/s Device-2: ChannelB-DIMM0 size: 16 GiB speed: 3000 MT/s CPU: Topology: 6-Core model: Intel Core i7-9750H bits: 64 type: MT MCP L2 cache: 12.0 MiB Speed: 800 MHz min/max: 800/4500 MHz Core speeds (MHz): 1: 800 2: 800 3: 801 4: 800 5: 801 6: 800 7: 800 8: 800 9: 800 10: 800 11: 801 12: 801 Graphics: Device-1: Intel UHD Graphics 630 driver: i915 v: kernel Device-2: NVIDIA TU116M [GeForce GTX 1660 Mobile] driver: N/A Display: server: X.Org 1.20.5 driver: intel unloaded: modesetting,vesa resolution: 1920x1080~144Hz OpenGL: renderer: Mesa DRI Intel UHD Graphics 630 (Coffeelake 3x8 GT2) v: 4.5 Mesa 19.1.8 Audio: Device-1: Intel Cannon Lake PCH cAVS driver: snd_hda_intel Device-2: NVIDIA driver: snd_hda_intel Sound Server: ALSA v: k5.3.8-gentoo Network: Device-1: Qualcomm Atheros AR9462 Wireless Network Adapter driver: ath9k IF: wlp8s0 state: up mac: <filter> Device-2: Realtek RTL8111/8168/8411 PCI Express Gigabit Ethernet driver: r8169 IF: enp9s0 state: down mac: <filter> IF-ID-1: sit0 state: down mac: <filter> IF-ID-2: tunl0 state: down mac: <filter> Drives: Local Storage: total: 1.38 TiB used: 173.88 GiB (12.3%) ID-1: /dev/nvme0n1 vendor: Samsung model: SSD 970 PRO 512GB size: 476.94 GiB ID-2: /dev/sda vendor: Samsung model: SSD 860 EVO 1TB size: 931.51 GiB Partition: ID-1: / size: 100.00 GiB used: 7.93 GiB (7.9%) fs: btrfs dev: /dev/dm-0 ID-2: /home size: 276.45 GiB used: 4.57 GiB (1.7%) fs: btrfs dev: /dev/dm-1 Sensors: System Temperatures: cpu: 58.0 C mobo: N/A Fan Speeds (RPM): N/A Info: Processes: 296 Uptime: 44m Shell: bash inxi: 3.0.36 Reproducible: Always
problem still present in 5.3.12
Experiencing this exact problem without LibreOffice launch or running. Have not been able to isolate to specific software, but does seem to occur with Firefox and Evolution running (not only during launch).
Can you attach the full dmesg please ?
I don't think it depends on the software used. My example with libreoffice was just a quick test. I think it's a call to a drm hardware acceleration feature that hangs the card. It's already nailed down to that kernel commit.
This is my report on linux bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=205545
Created attachment 597544 [details] dmesg output This is the dmesg output of the error happening with that kernel commit
Problem seems solved in 5.4.0 (still present in 5.3.13 though)
5.4.0 is still bad for my Skylake laptop. Keeps its Intel GPU 100% powered on and no cstates: | GPU | | | | Powered On100,0% | | RC6 0,0% | | RC6p 0,0% | | RC6pp 0,0% |
I just discovered that, after some use, the notebook freezes completely under 5.4.0. No logs, just a total freeze followed my a manual hard reset
https://bugs.freedesktop.org/show_bug.cgi?id=112315
https://gitlab.freedesktop.org/drm/intel/issues/614
Can you test gentoo-sources-5.5.0 ? The fix is reportedly in this kernel version
I'm testing 5.5.0 since a couple of days and didn't experience any hang. Still I don't know how 5.4.x behaves and that is going to be the longterm kernel for the next year...
Closing for now as it seems you moved to 5.5.X. If you want to go back to 5.4.X and you still have issues, please re-open
