Bug 110139

Summary: Driver throws exceptions when external display is connected over HDMI
Product: DRI Reporter: bastiborchers
Component: DRM/otherAssignee: Default DRI bug account <dri-devel>
Status: RESOLVED FIXED QA Contact:
Severity: normal    
Priority: medium    
Version: unspecified   
Hardware: x86-64 (AMD64)   
OS: Linux (All)   
Whiteboard:
i915 platform: i915 features:
Attachments:
Description Flags
The complete output of dmesg
none
The VBIOS information of the external display? none

Description bastiborchers 2019-03-16 13:42:54 UTC
Created attachment 143690 [details]
The complete output of dmesg

Hello! 
Let me state right now that this is my first bug report and I am a little bit lost about what criteria I have to fulfill and whether I am reporting for the correct component.

My system:
I am using Arch Linux with the 5.0.1 Linux kernel.
I have a Thinkpad P1 laptop with an Intel 8750H and an NVidia Quadro P1000.

What happens:
Before I turn on my laptop, I connected my external display via HDMI. Then I turn on my laptop and reach the bare tty (I am not using any Login Manager). While the tty is displayed, a lot of kernel messages are printed to the standard output about nouveau having some problems.
As soon as I try to login (which starts my Window Manager, Sway), the system freezes and I have to hard reset my Laptop.

Workaround:
When I disconnect the HDMI cable before booting and connect it AFTER I logged into my system, then my external display works correctly.

I dumped my whole dmesg output into the attached 'system.log' file, and I also retrieved the VBIOS information for my external display, I think.

Let me know, if I can provide any further information and again, excuse any noob mistakes.
Comment 1 bastiborchers 2019-03-16 13:43:36 UTC
Created attachment 143691 [details]
The VBIOS information of the external display?
Comment 2 bastiborchers 2019-03-16 13:46:22 UTC
Oh, I forgot to mention that in previous Kernel versions (at least up to 4.8), I had the same problem, but it was worse, since when reaching the tty with the HDMI connected, the system immediately froze. This was different, because with 5.0.1 I can at least able to reach tty and fetch the dmesg output, as the system only freezes if I actually try to login on tty
Comment 3 bastiborchers 2019-10-14 12:44:15 UTC
Hello, I have to add now that at some point this was fixed. Not a problem anymore

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