Hi! > >> The flickering would vanish completely if that's the reason for the issue > >> you are seeing. > > > >> Try setting ref_div_min and ref_div_max to 2 in > >> radeon_compute_pll_avivo(). > > > > Ok, I did this, but no luck, still flickers. But the flicker only > > happens when something changes on screen, like dragging a big > > window. Is that consistent with wrong PLL timings? > > Does it go away with radeon.dpm=0? Sounds more like either memory > reclocking happening outside of vblank, or underflow to the display > controllers.
No, it does not: pavel at half:~$ cat /proc/cmdline BOOT_IMAGE=(hd0,2)/l/linux/arch/x86/boot/bzImage root=/dev/sda4 resume=/dev/sda1 radeon.dpm=0 ..and same issue. And yes, it looks like an underflow to me. How can I debug reclocking / underflows? Best regards, Pavel -- (english) http://www.livejournal.com/~pavelmachek (cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html