[Bug 105325] [KBL LSPCON] Linux will reboot when installing with connect HDMI monitor (include PS175 LSPCON)

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=105325

--- Comment #6 from James <jameshohuang at supermicro.com> ---
(In reply to Elizabeth from comment #5)
> Hello, could you please install dmc firmware for kbl?
> https://01.org/linuxgraphics/downloads/firmware
> 
> Also, with dmc, is it this still reproducible with latest stable
> https://www.kernel.org?
> 
> Does it happens when you have HDMI connected before the machine is powered
> on, or connected while booting?
> 
> Please attach the logs as raw text, is easier to access them that way. And I
> don't see the debug parameter (drm.debug=0x1e) on kern.log:
> 
> Command line: BOOT_IMAGE=/boot/vmlinuz-4.10.0-28-generic
> root=UUID=80203aee-c3f9-446d-a77b-7e45f9479436 ro quiet splash
> i915.enable_rc6=0
> 
> Thanks.

Hi Elizabeth,
This issue only happened on booting linux, win10 works fine.
This system has display port and HDMI port. In Display port, it can boot to
Linux, but not HDMI.

And HDMI hot plug in Ubuntu also reset the system.
1. Boot to Ubuntu with Display port
2. unplug Display port, plug HDMI
3. System will reset when I unpluged HDMI

Is it related HDMI HPD function?

I will attach the log latter.

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