[Bug 74266] [HD 4400] DisplayPort resolution limited to 1920x1200

bugzilla-daemon at freedesktop.org bugzilla-daemon at freedesktop.org
Fri Jan 31 01:47:14 PST 2014


https://bugs.freedesktop.org/show_bug.cgi?id=74266

--- Comment #9 from steven at midlink.org ---
Thanks. I will try to get back to you with the logs hopefully later today.
Here is another clue I got from the dock manufacturer page:


DisplayPort with maximum resolution 2560x1600*
DVI-I with maximum 1920x1200 resolution and DVI to VGA adapter included in the
box
* Maximum resolution of 1920 x 1200 supported if second monitor is attached to
DVI output.


Please excuse my wild guessing as I don't really have expertise in this area:
Maybe the driver/DRM doesn't really make that distinction and just always
assumes the maximum resolution is 1920x1200 on the DP as opposed to Windows
which seems to behave differently then.


Also obviously I don't have anything attached to that DVI-port.

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