[Bug 109750] Second display does not show up on dock of Lenovo Helix 2

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=109750

Lakshmi <lakshminarayana.vudum at intel.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Priority|high                        |medium

--- Comment #16 from Lakshmi <lakshminarayana.vudum at intel.com> ---
(In reply to Ville Syrjala from comment #14)
> Hmm. Could be the BIOS has a borked VBT. Looks like you're booting in EFI
> mode so it shouldn't be due to busted legacy mode support in the BIOS (which
> is somewhat common).
> 
> Please attach a copy of /sys/kernel/debug/dri/0/i915_vbt
> 
> Also when you have the external display connected to the dock please do this
> as root:
> "modprobe i2c-dev ; for i in `seq 0 9` ; do i2cdetect -y $i 0x50 0x50 ; done"
> and attach the result here. That should tell is if an EDID can be detected
> on any i2c bus.
> 
> Is the BIOS capable of lighting up the external display on the dock? If yes,
> it would be helpful if you can boot without loading i915 (eg. pass
> modprobe.blacklist=i915,snd_hda_intel to the kernel cmdline and prevent all
> gui stuff from starting up). Once up and running w/o i915 loaded you should
> grab a register dump with "intel_reg dump" and attach here. intel_reg is
> part of igt: git://anongit.freedesktop.org/xorg/app/intel-gpu-tools

(In reply to Lakshmi from comment #15)
> Uwe, any updates here? Can you please follow the instructions given in
> Comment 14 and attach all required information. This is needed to proceed
> further with the investigation.

No feedback from more than a month. Dropping the Priority to Medium.

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