On Wed, Aug 24, 2022 at 8:28 PM Limonciello, Mario <[email protected]> wrote: > > [Public] > > > > > -----Original Message----- > > From: Kai-Heng Feng <[email protected]> > > Sent: Wednesday, August 24, 2022 09:17 > > To: Limonciello, Mario <[email protected]> > > Cc: [email protected]; Len Brown <[email protected]>; > > [email protected]; [email protected]; > > [email protected]; [email protected]; [email protected]; > > Lyude Paul <[email protected]>; [email protected]; linux- > > [email protected] > > Subject: Re: [PATCH 1/4] ACPI: OSI: Remove Linux-Dell-Video _OSI string > > > > On Wed, Aug 24, 2022 at 2:51 AM Mario Limonciello > > <[email protected]> wrote: > > > > > > This string was introduced because drivers for NVIDIA hardware > > > had bugs supporting RTD3 in the past. Thoes bugs have been fixed > > > by commit 5775b843a619 ("PCI: Restore config space on runtime resume > > > despite being unbound"). so vendors shouldn't be using this string > > > to modify ASL anymore. > > > > Add some backgrounds on what happened. > > > > Before proprietary NVIDIA driver supports RTD3, Ubuntu has a mechanism > > that can switch PRIME on and off, though it requires to logout/login > > to make the library switch happen. > > When the PRIME is off, the mechanism unload NVIDIA driver and put the > > device to D3cold, but GPU never came back to D0 again. So ODM use the > > _OSI to expose an old _DSM method to switch the power on/off. > > > > The issue is fixed by the said commit so we can discard the workaround now. > > > > Thanks for that. If this series needs to spin I'll roll that into the commit > message. > Otherwise perhaps Rafael can pick up some of it if he thinks it makes sense > to include.
I've applied the series (as 6.1 material) and included the information above into the changelog of the first patch. I've also edited the changelogs of the other patches somewhat. Thanks!
