Re: 16:9 Displays 1280x768 1360x768 and rotation
Your bug report does not have the 1360x768 modeline commented out as I requested. Did you test with the modeline commented out?
However, the bigger problem is that your display isn't even being detected:
(WW) NVIDIA(0): No boot display device found! Assuming one CRT
(WW) NVIDIA(0): Unable to read EDID for display device CRT-0
and as a result the EDID can't be read. Are you using a KVM, or any other intermediary device between the display and the videocard?
Both of your displays are flatpanel LCD TVs. Are you connecting them with an analog VGA cable?
You stated "I can reproduce it every time here.". I asked whether you can reproduce it with the RandR extention or the "Rotate" option, but not both together. Does this imply that either option triggers the instability?