[Public] > -----Original Message----- > From: Michel Dänzer <michel@xxxxxxxxxxx> > Sent: Thursday, September 16, 2021 4:12 PM > To: Christian König <ckoenig.leichtzumerken@xxxxxxxxx>; Quan, Evan > <Evan.Quan@xxxxxxx> > Cc: Deucher, Alexander <Alexander.Deucher@xxxxxxx>; Koenig, Christian > <Christian.Koenig@xxxxxxx>; 'amd-gfx@xxxxxxxxxxxxxxxxxxxxx' <amd- > gfx@xxxxxxxxxxxxxxxxxxxxx> > Subject: Re: DRM IOCTLS come regularly(every minute) still even after screen > off > > On 2021-09-16 08:27, Christian König wrote: > > Good morning, > > > > for the background I advised to contact you Michel since we couldn't find > an explanation. > > > > Alex explanation might be correct, but the CS seems to come from the X > server and is always roughly 60 seconds after going into power save. > > > > Any idea what that could be? > > For the DRM_IOCTL_MODE_* ioctls, attaching gdb to Xorg and setting a > breakpoint on drmIoctl should show where they're coming from. > > The AMDGPU_CS ioctls are probably from glamor calling OpenGL, most likely > for X11 drawing protocol requests. Note that in this case drmIoctl/ioctl will > likely be called from a separate thread. Pierre / Marek should be able to help > you find out where the OpenGL calls are coming from. > > > In general, Xorg only ever does anything in response to: > > * X11 protocol requests, i.e. on behalf of clients. > * Input events, i.e. on behalf of the user. > * Other kernel events, e.g. hotplug events. > Thanks for sharing these. > > FWIW, with only xfwm4 & xterm running on Xorg, I'm not seeing any drmIoctl > calls during DPMS off. So the ioctls you're seeing are most likely triggered by > clients. > Got it. Thanks! Evan > > -- > Earthling Michel Dänzer | > https://nam11.safelinks.protection.outlook.com/?url=https%3A%2F%2Fredh > at.com%2F&data=04%7C01%7CEvan.Quan%40amd.com%7C296d316427 > b4469f8eb908d978e9b46a%7C3dd8961fe4884e608e11a82d994e183d%7C0%7 > C0%7C637673767426116632%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4w > LjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C1000&am > p;sdata=gBj4idZGCuaPdyaH1g1mfuDqPCcKhFMjPCbqpM8drlg%3D&res > erved=0 > Libre software enthusiast | Mesa and X developer
