I'm using the 'redshift' application, which uses 'xcb_randr_set_crtc_gamma_checked' in order to adjust the gamma on my screen.
Unfortunately, when I perform a screen rotation using xrandr, these settings get reset back to default!
I believe this was a regression between the version of X.org shipped with Natty and Oneiric.
While you believe it's a regression, can you confirm that it is a regression in the *server* not some driver issues?
Also, what versions (video drivers and server) were you using when it worked and when it failed?
Created attachment 55099 [details]
Xorg log for version (with bug)
Here is my Xorg.0.log, from what I believe is the version which has the bug.
Created attachment 55100 [details]
Log from Xorg, probably without bug, but not sure
Here's an old Xorg log I found lying around on my system. I'm not sure if it corresponds, but looking at the kernel version there is a high probability it does.
Mass closure: This bug has been untouched for more than six years, and is not obviously still valid. Please file a new report if you continue to experience issues with a current server.