[Bug 56834] [ivb DP dual link DVI dongle regression] [drm:intel_dp_i2c_aux_ch] *ERROR* too many retries, giving up

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=56834

--- Comment #56 from freeseek <giulio.genovese at gmail.com> ---
With kernel 3.18.1-031801-generic the system does not crash anymore. However,
it is still the case that using the BizLink diplay port adapter the monitor
resolutions are not acquired correctly (while the command "sudo get-edid |
parse-edid" provides the correct resolutions) and it is still the case that
when plugging the monitor, often but not always the laptop fails to turn the
external screen on (previously this often triggered a freeze). When the
external screen fails to turn on, usually turning it off and then back on fixed
the problem. This is still not ideal but it is a great improvement over kernel
3.16. I still get the following messages in the system log:
[drm:intel_dp_start_link_train] *ERROR* failed to enable link training
[drm:intel_dp_complete_link_train] *ERROR* failed to start channel equalization

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