[Bug 56834] [ivb DP dual link DVI dongle] [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 #21 from freeseek <giulio.genovese at gmail.com> ---
I have the same problem with a Lenovo X220 (which uses a Sandy Bridge HD 3000)
and a BizLink diplay port adapter. By default, xrandr does not detect the
correct resolution of the HP LP3065 monitor. I am using a regular version of
Ubuntu Raring (3.8.0-19-generic x86_64). I receive 340
"[drm:intel_dp_i2c_aux_ch] *ERROR* too many retries, giving up" messages at
startup (through dmesg). The following command: "sudo get-edid | parse-edid"
detects the HP LP3065 monitor resolutions though. My workaround so far has been
to run the following commands after booting the laptop:
xrandr --newmode 2560x1600 268.00 2560 2608 2640 2720 1600 1603 1609 1646
-hsync +vsync
xrandr --addmode DP1 2560x1600
xrandr --output LVDS1 --off --output DP1 --mode 2560x1600
Where the above parameters are specific to the parameters received from the
"sudo get-edid | parse-edid" command. The same monitor plugged through DVI
without the display port adapter worked just fine on a different Linux machine.

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