Good news! No repro on freshly-installed, fully up-to-date Ubuntu 12.10 amd64 using nvidia-current (version 304.51.really.304.43-0ubuntu1). I tested Unity, GNOME Shell, and GNOME Classic (No Effects) with glxgears and YouTube and I verifed that PowerMizer was switching performance levels. Never saw any blinking.
I'm leaving the bug status as Expired since technically 12.10 doesn't use the 180-series drivers.
Good news! No repro on freshly-installed, fully up-to-date Ubuntu 12.10 amd64 using nvidia-current (version 304.51. really. 304.43- 0ubuntu1) . I tested Unity, GNOME Shell, and GNOME Classic (No Effects) with glxgears and YouTube and I verifed that PowerMizer was switching performance levels. Never saw any blinking.
I'm leaving the bug status as Expired since technically 12.10 doesn't use the 180-series drivers.