Created attachment 131820 [details] dmesg output Description of problem: 3 out of 5 times if my laptop (T460p) is connected to external display via display port and I reboot the machine, then after login screen the desktop is completely frozen. Also, while the desktop/display is frozen - I am able to SSH to the machine remotely and do my stuff. I have gathered journalctl and dmesg logs via remote SSH when this happened. My laptop (Thinkpad T460p) although has Nvidia card - I have noveou module blacklisted and I always use integrated intel graphics. My external display is a AOC 4K monitor connected via display port. Version-Release number of selected component (if applicable): Linux pern 4.11.3-200.fc25.x86_64 #1 SMP Thu May 25 19:03:07 UTC 2017 x86_64 x86_64 x86_64 GNU/Linux How reproducible: Steps to Reproduce: 1. Connect the laptop to an external display via display port. 2. Reboot the laptop. 3. Enter username & password at login screen and watch the desktop freeze. Actual results: Desktop is frozen Expected results: Desktop should not be frozen.
Created attachment 131821 [details] hardware information
Created attachment 131822 [details] journalctl log since boot
I am running fully updated Fedora 25 with latest kernel.
Also my mesa version is: ─~> glxinfo|grep Mesa client glx vendor string: Mesa Project and SGI Device: Mesa DRI Intel(R) HD Graphics 530 (Skylake GT2) (0x191b) OpenGL renderer string: Mesa DRI Intel(R) HD Graphics 530 (Skylake GT2) OpenGL core profile version string: 4.5 (Core Profile) Mesa 17.0.5 OpenGL version string: 3.0 Mesa 17.0.5 OpenGL ES profile version string: OpenGL ES 3.2 Mesa 17.0.5
I don't see any GPU hangs here, so I suspect the 3D driver is not at fault. I do see several vblank waits failing. Reassigning to the kernel for now, as it sounds like a modesetting bug.
Could this be related to https://bugs.freedesktop.org/show_bug.cgi?id=93782 ? I am also using a docking station for connecting the external display.
Hello, could you please try to replicate the bug without the docking station. Also add the kern.log Thanks.
I can't seem to reproduce this with external display connected directly via display port cable. I just did bunch of reboot cycles.
(In reply to Ram Manohar from comment #8) > I can't seem to reproduce this with external display connected directly via > display port cable. > > I just did bunch of reboot cycles. Hello again, it seems that there are some features of docking stations that are only available on kernel 4.12, is possible for you to change to 4.12 and try to replicate the problem with the docking station???
Hello, I could not reproduce the issue with the following configuration: ====================================== Graphic stack ====================================== ====================================== Software ====================================== kernel version : 4.12.0-rc3-drm-tip-ww22-commit-187376e+ architecture : x86_64 os version : Ubuntu 17.04 os codename : zesty kernel driver : i915 bios revision : 5.12 bios release date : 09/12/2016 ====================================== Graphic drivers ====================================== mesa : 17.0.3 modesetting : modesetting_drv.so xorg-xserver : 1.19.3 libdrm : 2.4.81 cairo : 1.14.8 xserver : X.Org X Server 1.19.99.1 intel-gpu-tools (tag) : intel-gpu-tools-1.18-211-g00ce341b intel-gpu-tools (commit) : 00ce341b ====================================== Hardware ====================================== platform : KBL-Nuc motherboard model : MS-B142 motherboard id : MS-B1421 form factor : Desktop manufacturer : Micro-StarInternationalCo.,Ltd. cpu family : Core i7 cpu family id : 6 cpu information : Intel(R) Core(TM) i7-7500U CPU @ 2.70GHz gpu card : Intel Corporation Device 5916 (rev 02) (prog-if 00 [VGA controller]) memory ram : 7.65 GB max memory ram : 64 GB display resolution : 1600x900 cpu thread : 4 cpu core : 2 cpu model : 142 cpu stepping : 9 socket : Other signature : Type 0, Family 6, Model 142, Stepping 9 hard drive : 111GiB (120GB) current cd clock frequency : 337500 kHz maximum cd clock frequency : 675000 kHz displays connected : DP-1 ====================================== Firmware ====================================== dmc fw loaded : yes dmc version : 1.1 guc fw loaded : NONE guc version wanted : 0.0 guc version found : 0.0 ====================================== kernel parameters ====================================== quiet splash fastboot drm.debug=0xe Regards.
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