[Bug 69128] [IVB dp dongle] Aplle miniDP-to-VGA fails link training

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=69128

shui yangwei <yangweix.shui at intel.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEEDINFO                    |NEW
           Assignee|intel-gfx-bugs at lists.freede |yangweix.shui at intel.com
                   |sktop.org                   |

--- Comment #4 from shui yangwei <yangweix.shui at intel.com> ---
Created attachment 85682
  --> https://bugs.freedesktop.org/attachment.cgi?id=85682&action=edit
dmesg: with Mika's patch on latest -next-queued kernel

(In reply to comment #3)
> Please try Mika's patch from:
> https://bugs.freedesktop.org/show_bug.cgi?id=60263#c10

This patch doesn't fix this error. I applied Mika's patch on latest
-next-queued kernel, and this issue also exists. Like below listed:

[root at x-ivb17 ~]# dmesg | grep -i "error"
[    4.673347] [drm:intel_dp_i2c_aux_ch] *ERROR* too many retries, giving up
[    4.677734] [drm:intel_dp_i2c_aux_ch] *ERROR* too many retries, giving up
[    4.770181] [drm:intel_dp_i2c_aux_ch] *ERROR* too many retries, giving up
[    4.772661] [drm:intel_dp_i2c_aux_ch] *ERROR* too many retries, giving up
[    4.775185] [drm:intel_dp_i2c_aux_ch] *ERROR* too many retries, giving up
[    4.777690] [drm:intel_dp_i2c_aux_ch] *ERROR* too many retries, giving up
[    4.780363] [drm:intel_dp_i2c_aux_ch] *ERROR* too many retries, giving up
[    4.782871] [drm:intel_dp_i2c_aux_ch] *ERROR* too many retries, giving up


I append the dmesg here, maybe it can help you.

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