On Fri, Dec 16, 2016 at 4:09 PM, Joseph D. Wagner <j...@josephdwagner.info> wrote: > On 2016-12-16 12:52, Ilia Mirkin wrote: > >> On Fri, Dec 16, 2016 at 12:10 PM, Joseph D. Wagner >> <j...@josephdwagner.info> wrote: >> >>> When using the nouveau driver, my screen freezes (and stays frozen) when >>> it >>> starts to more than a minimum amount of work. To fix this, I've been >>> using >>> the nvidia driver with the Preferred Mode set to Prefer Maximum >>> Performance. >>> >>> It looks like equivalent settings in nouveau are NvClkMode and NvMemExec. >>> However, I didn't see any documentation specifying the valid options for >>> these settings? >>> >>> What are the valid options for NvClkMode? >> >> >> This takes the decimal (!) value of the pstate you want to clock to on >> boot. The valid pstates are defined by your VBIOS, and are visible in >> /sys/kernel/debug/dri/0/pstate (in hex). > > > These are my options. I've tried both 14 (0e) and 15 (0f). Both appear to > work. Is there a difference?
Probably, but you'll never know what it is. It's a bunch of tables in the vbios which specify stuff. Could be the video domain is clocked lower, or something else trivial. > 07: core 405 MHz memory 648 MHz > 0a: core 405-967 MHz memory 1620 MHz > 0e: core 405-1241 MHz memory 6008 MHz > 0f: core 405-1241 MHz memory 6008 MHz AC DC * > AC: core 405 MHz memory 6007 MHz > > 0f is currently selected in the above. > >> Based on the little information you provided, I doubt your hangs have >> much to do with the performance level. (Unless you meant to say "When >> using the nvidia driver ... ".) > > > If I run it without NvClkMode at boot time, it will freeze on me after > moderate use while using the nouveau driver. > > If I run it with NvClkMode=14 or NvClkMode=15, it appears to work fine (from > the small amount of testing I've done). Surprising. Not sure why that would happen. Perhaps the memory comes up a little weird, and *any* reclock would "fix" it, not necessarily to the highest perf level. Note that kernel 4.10 (or the current drm-next tree, or linus's HEAD) should allow you to properly reclock the core of that GPU (your current setting is at 405 instead of the max which is probably 1100-1200, depending on some voltage setting details). "AC" displays the current configuration. The *'s are mostly there to mislead you :) Cheers, -ilia _______________________________________________ Nouveau mailing list Nouveau@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/nouveau