On Fri, Jul 15, 2016 at 12:10 PM, Ilia Mirkin <imirkin@xxxxxxxxxxxx> wrote: > On Fri, Jul 15, 2016 at 9:12 AM, Peter Wu <peter@xxxxxxxxxxxxx> wrote: >> Hi, >> >> Here are two patches to fix an issue reported on kernel bugzilla (infinite loop >> due to unchecked function) and a more important fix to fix hanging Optimus >> machines when runtime PM is enabled (with pm/pci patches). >> >> These are the final patches targeting v4.8. Changes compared to v2[1]: >> collected R-b from Hans and Mika and fixed a minor comment style issue. >> >> I recommend it to be merged before the pci/pm patches[2], otherwise there is a >> window where newer Nvidia Optimus laptops might fail to runtime resume and/or >> lock up. Once the pci/pm branch is merged I will propose another patch to >> improve reliability[3]. >> >> Known issue with patch 4: when a Nvidia HDMI audio function is present, the >> bridge will not suspend and hence the Nvidia card will still be powered. Fixing > > That's basically all optimus gpu's, right? Anything GT21x+ has a HDMI > audio subfunction, and prior to that, the nvidia gpu tended to be the > only gpu, or hard-muxed. I'd imagine there is a strap on the asic so the audio function is only enabled if there is a connector actually wired to the dGPU. It doesn't make much sense to expose audio if there is no way to use it. Alex _______________________________________________ dri-devel mailing list dri-devel@xxxxxxxxxxxxxxxxxxxxx https://lists.freedesktop.org/mailman/listinfo/dri-devel
