On Saturday 07 Jun 2014 12:21:51 Mick wrote:
> On Tuesday 11 Mar 2014 14:47:26 Mick wrote:
> > On Tuesday 11 Mar 2014 08:00:43 Carsten Haitzler wrote:
> > > On Tue, 11 Mar 2014 06:51:59 +0000 Mick <[email protected]>
said:
> > > > Hi All,
> > > >
> > > > I thought of asking here first. When I wake up the machine from
> > > > hibernation the radeon driver starts throwing all these errors up and
> > > > eventually the xsession is terminated, knocking me out of e18:
> > > > ==========================================================
> > > > Mar 10 22:56:05 dell_xps kernel: hub 1-0:1.0: hub_suspend
> > > > Mar 10 22:56:05 dell_xps kernel: usb usb1: bus auto-suspend, wakeup 1
> > > > Mar 10 22:56:05 dell_xps kernel: ehci-pci 0000:00:1a.0: suspend root
> > > > hub Mar 10 22:56:07 dell_xps kernel: radeon 0000:02:00.0:
> > > > ffff880075e91000 pin failed
> > > > Mar 10 22:56:07 dell_xps kernel: [drm:radeon_crtc_page_flip] *ERROR*
> > > > failed to pin new rbo buffer before flip
> > > > Mar 10 22:56:07 dell_xps kernel: radeon 0000:02:00.0:
> > > > ffff880075e91000 pin failed
> > > > Mar 10 22:56:07 dell_xps kernel: [drm:radeon_crtc_page_flip] *ERROR*
> > > > failed to pin new rbo buffer before flip
> > > > Mar 10 22:56:07 dell_xps kernel: radeon 0000:02:00.0:
> > > > ffff880075e91000 pin failed
> > > > Mar 10 22:56:07 dell_xps kernel: [drm:radeon_crtc_page_flip] *ERROR*
> > > > failed to pin new rbo buffer before flip
> > > > Mar 10 22:56:07 dell_xps kernel: radeon 0000:02:00.0:
> > > > ffff880075e91000 pin failed
> > > > Mar 10 22:56:07 dell_xps kernel: [drm:radeon_crtc_page_flip] *ERROR*
> > > > failed to pin new rbo buffer before flip
> > > > Mar 10 22:56:07 dell_xps kernel: radeon 0000:02:00.0:
> > > > ffff880075e91000 pin failed
> > > > Mar 10 22:56:07 dell_xps kernel: [drm:radeon_crtc_page_flip] *ERROR*
> > > > failed to pin new rbo buffer before flip
> > > > Mar 10 22:56:07 dell_xps kernel: radeon 0000:02:00.0:
> > > > ffff880075e91000 pin failed
> > > > Mar 10 22:56:07 dell_xps kernel: [drm:radeon_crtc_page_flip] *ERROR*
> > > > failed to pin new rbo buffer before flip
> > > > Mar 10 22:56:07 dell_xps kernel: radeon 0000:02:00.0:
> > > > ffff880075e91000 pin failed
> > > > Mar 10 22:56:07 dell_xps kernel: [drm:radeon_crtc_page_flip] *ERROR*
> > > > failed to pin new rbo buffer before flip
> > > > Mar 10 22:56:07 dell_xps kernel: radeon 0000:02:00.0:
> > > > ffff880075e91000 pin failed
> > > > Mar 10 22:56:07 dell_xps kernel: [drm:radeon_crtc_page_flip] *ERROR*
> > > > failed to pin new rbo buffer before flip
> > > > Mar 10 22:56:07 dell_xps kernel: radeon 0000:02:00.0:
> > > > ffff880075e91000 pin failed
> > > > Mar 10 22:56:07 dell_xps kernel: [drm:radeon_crtc_page_flip] *ERROR*
> > > > failed to pin new rbo buffer before flip
> > > > Mar 10 22:56:07 dell_xps kernel: radeon 0000:02:00.0:
> > > > ffff880075e91000 pin failed
> > > > [snip ...]
> > > >
> > > > Mar 10 22:56:31 dell_xps kernel: radeon 0000:02:00.0:
> > > > ffff880075e91000 pin failed
> > > > Mar 10 22:56:31 dell_xps kernel: [drm:radeon_crtc_page_flip] *ERROR*
> > > > failed to pin new rbo buffer before flip
> > > > Mar 10 22:56:31 dell_xps kernel: usb 2-1.2: unlink
> > > > qh8-0601/ffff8801323ab400 start 3 [1/2 us]
> > > > Mar 10 22:56:31 dell_xps kdm[1544]: X server for display :0
> > > > terminated unexpectedly
> > > > ==========================================================
> > > >
> > > > Even if I re-log into e18 within a few seconds X will crash and kick
> > > > me out. The only way out of this is to reboot. If I do not build
> > > > the respective binary blob in the firmware then this problem does
> > > > not occur.
> > > >
> > > > This is what I have specified in the kernel:
> > > > CONFIG_EXTRA_FIRMWARE="radeon/R700_rlc.bin radeon/RV730_smc.bin
> > > > radeon/RV710_uvd.bin"
> > > >
> > > >
> > > > Shall I file a bug for the radeon driver, or is it something else
> > > > causing this?
> > >
> > > almost definitely. a low level bug. from the messages i might guess
> > > that it's trying to force your buffer to be non-swappable (cannot be
> > > removed from memory and written to disk with hibernation or swapping
> > > in ay way) and that is failing. a scanout buffer MUST be in memory and
> > > cannot be paged in by kernel +mmu traps. it cannot move around in
> > > memory - likely required to be at the exact same physical address and
> > > possibly not fragmented (in one continuous chunk) and tryng to force
> > > the buffer to do this is failing for whatever reason (likely
> > > hibernation forced the memory to become "virtual" to be able to be
> > > written out to disk, and once virtual it can no longer be converted
> > > back to physical "pinnable" mode - likely a driver limitation).
> > > technically if this is a limit then the driver should re-allocate the
> > > buffer somewhere else in memory and ensure that it is physically
> > > accessible like scanout wants (pinnable - i am guessing here - i know
> > > nothing of radeon internals), and ifr needed copy the buffer contents
> > > from virtual to the new physical pinned buffer, free the old virtual
> > > buffer and simply re-program pagetables to point the SAeM virtual
> > > address that userspace saw to point to the new REAL physical buffer
> > > location... but it's not doing this as someone simply didn't bother
> > > writing the support code to handle this case.
> > >
> > > until the driver is fixed, don't hibernate, as that can't FORCE the
> > > memory out of its current "pinnable" mode. :) (alternative for driver
> > > is to deny/fail the hibernate since its impossible to hibernate the
> > > memory).
> >
> > Thanks Raster for a crash course on Radeon's non-swappable buffers! :-)
> >
> > I'll file a bug if one has not been filed already, if only to give the
> > devs a chance to look into it.
>
> This was a kernel bug and with 3.12.21-r1 I can hibernate again. Now I get
> this in the log:
>
> Jun 7 12:14:11 dell_xps kernel: radeon 0000:02:00.0: GPU lockup CP stall
> for more than 10000msec
> Jun 7 12:14:11 dell_xps kernel: radeon 0000:02:00.0: GPU lockup (waiting
> for 0x0000000000000004 last fence id 0x0000000000000002)
> Jun 7 12:14:11 dell_xps kernel: [drm:uvd_v1_0_ib_test] *ERROR* radeon:
> fence wait failed (-35).
> Jun 7 12:14:11 dell_xps kernel: [drm:radeon_ib_ring_tests] *ERROR* radeon:
> failed testing IB on ring 5 (-35).
> Jun 7 12:14:11 dell_xps kernel: PM: restore of devices complete after
> 11655.171 msecs
> Jun 7 12:14:11 dell_xps kernel: PM: Image restored successfully.
>
>
> but no crashes so far. :-)
Oops! Spoke too fast. :-(
and also lost the URL with the kernel bug that I had found.
--
Regards,
Mick
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