On Fri, Dec 21, 2012 at 10:33 AM, Pavel Roskin <proski@xxxxxxx> wrote: > Hello! > > The system running the current mainline Linux shows black screen for me > reliably if I run the unshield program on xterm. Linux 3.7 is OK. > > The bisection found the first bad commit: > > deab48f140d28d788cb2b5705761a92b02e3440d > Alex Deucher <alexander.deucher@xxxxxxx> > > drm/radeon: add dma engine support for vm pt updates on si (v2) > > Async DMA has a special packet for contiguous pt updates > which saves overhead. > > v2: rebase That patch only affects SI chips which yours is not, so it's probably not what's causing problems for you. > > It can be reverted on top on the mainline Linux, but I still get the black > screen. I guess it's the first commit that is bad for my video card, but > not the only one. > > While bisecting, I noticed another manifestation of the problem - unshield > would hang for a few seconds and continue. Following appears in the kernel > log: > > [ 31.476089] radeon 0000:01:00.0: GPU lockup CP stall for more than > 10000msec > [ 31.476094] radeon 0000:01:00.0: GPU lockup (waiting for > 0x0000000000000006 last fence id 0x0000000000000005) > > # lspci -vnn -s 01:00.0 > 01:00.0 VGA compatible controller [0300]: ATI Technologies Inc RV610 video > device [Radeon HD 2400 PRO] [1002:94c3] (prog-if 00 [VGA controller]) > Subsystem: ASUSTeK Computer Inc. Device [1043:01c2] > Flags: bus master, fast devsel, latency 0, IRQ 46 > Memory at e0000000 (64-bit, prefetchable) [size=256M] > Memory at f5000000 (64-bit, non-prefetchable) [size=64K] > I/O ports at b000 [size=256] > [virtual] Expansion ROM at f4000000 [disabled] [size=128K] > Capabilities: [50] Power Management version 3 > Capabilities: [58] Express Legacy Endpoint, MSI 00 > Capabilities: [a0] MSI: Enable+ Count=1/1 Maskable- 64bit+ > Capabilities: [100] Vendor Specific Information: ID=0001 Rev=1 > Len=010 <?> > Kernel driver in use: radeon > This looks like a duplicate of this issue: http://lists.freedesktop.org/archives/dri-devel/2012-December/032139.html http://lists.freedesktop.org/archives/dri-devel/2012-December/032291.html Some of the ttm changes in 3.8 seem problematic. Alex _______________________________________________ dri-devel mailing list dri-devel@xxxxxxxxxxxxxxxxxxxxx http://lists.freedesktop.org/mailman/listinfo/dri-devel
