On 12/24/2016 07:48 PM, Roy Spliet wrote: > I've observed this regression on my NVAC board; a 1920x1080 TV on HDMI > (single monitor set-up) gets no signal with Fedora kernels from 4.8. > Trace sent to the mmio dumps mailbox. A brief scan already revealed that > register 0xe840 is never touched, so it appears that NVIDIA does > something different. > VBIOS for this board is in the usual place. Commenting out 0xac from the > workaround seems to solve the problem, as tested on a Fedora 4.9 kernel. > I hope that helps you get a little further with this issue. Cheers, and > happy holidays! Thanks Roy,
NVIDIA told me that it applied to these boards, but, I can't see NVIDIA attempting the workaround in your trace, so until there's evidence to the contrary, I've disabled it for MCP7x for now. Ben. > > Roy. > > Op 22-11-16 om 15:04 schreef poma: >> On 20.10.2016 00:46, Ben Skeggs wrote: >> [...] >>> I'd like to see a mmiotrace of the NVIDIA binary driver on a system >>> where this WAR breaks things. I applied it to all the GPUs that NVIDIA >>> told me required it. >>> >>> Ben. >>> >> Still broken, more than four months, >> tested with mainline 4.9-rc6. >> >> According to Ben Skeggs, >> since this is "told" by NVIDIA i.e. by you, or perhaps some other of your >> colleagues, >> what's more that I don't see progress in this regard, >> would you guys from NVIDIA R&D mind help him to finally solve this? >> >> Thanks. >> >> >> Ref. >> https://lists.freedesktop.org/archives/nouveau/2016-October/026242.html >> http://goo.gl/Gm4ffO >> mmiotrace-nouveau/ >> _______________________________________________ >> Nouveau mailing list >> Nouveau@lists.freedesktop.org >> https://lists.freedesktop.org/mailman/listinfo/nouveau >
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