On Mon, Nov 17, 2014 at 1:51 AM, Michel Dänzer <michel at daenzer.net> wrote: > On 15.11.2014 07:21, Andy Lutomirski wrote: >> >> I have a Caicos card, like this: >> >> [ 3.077260] [drm] radeon kernel modesetting enabled. >> [ 3.077338] checking generic (e0000000 600000) vs hw (e0000000 >> 10000000) >> [ 3.077339] fb: switching to radeondrmfb from EFI VGA >> [ 3.077377] Console: switching to colour dummy device 80x25 >> [ 3.078881] [drm] initializing kernel modesetting (CAICOS >> 0x1002:0x6779 0x174B:0xE164). >> [ 3.078903] [drm] register mmio base: 0xF4A20000 >> [ 3.078904] [drm] register mmio size: 131072 >> [ 3.078982] ATOM BIOS: C26401 >> [ 3.079572] radeon 0000:09:00.0: VRAM: 1024M 0x0000000000000000 - >> 0x000000003FFFFFFF (1024M used) >> [ 3.079574] radeon 0000:09:00.0: GTT: 1024M 0x0000000040000000 - >> 0x000000007FFFFFFF >> [ 3.079576] [drm] Detected VRAM RAM=1024M, BAR=256M >> [ 3.079577] [drm] RAM width 64bits DDR >> [ 3.079755] [TTM] Zone kernel: Available graphics memory: 8186568 kiB >> [ 3.079757] [TTM] Zone dma32: Available graphics memory: 2097152 kiB >> [ 3.079757] [TTM] Initializing pool allocator >> [ 3.079773] [TTM] Initializing DMA pool allocator >> [ 3.080011] [drm] radeon: 1024M of VRAM memory ready >> [ 3.080012] [drm] radeon: 1024M of GTT memory ready. >> [ 3.080049] [drm] Loading CAICOS Microcode >> [ 3.080330] [drm] Internal thermal controller without fan control >> [ 3.081425] [drm] radeon: power management initialized >> [ 3.081551] [drm] GART: num cpu pages 262144, num gpu pages 262144 >> [ 3.082589] [drm] enabling PCIE gen 2 link speeds, disable with >> radeon.pcie_gen2=0 >> [ 3.085030] [drm] PCIE GART of 1024M enabled (table at >> 0x0000000000274000). >> [ 3.085221] radeon 0000:09:00.0: WB enabled >> [ 3.085224] radeon 0000:09:00.0: fence driver on ring 0 use gpu >> addr 0x0000000040000c00 and cpu addr 0xffff88043d914c00 >> [ 3.085225] radeon 0000:09:00.0: fence driver on ring 3 use gpu >> addr 0x0000000040000c0c and cpu addr 0xffff88043d914c0c >> [ 3.097438] radeon 0000:09:00.0: fence driver on ring 5 use gpu >> addr 0x0000000000072118 and cpu addr 0xffffc900128b2118 >> [ 3.097441] [drm] Supports vblank timestamp caching Rev 2 (21.10.2013). >> [ 3.097442] [drm] Driver supports precise vblank timestamp query. >> [ 3.097514] radeon 0000:09:00.0: irq 56 for MSI/MSI-X >> [ 3.097544] radeon 0000:09:00.0: radeon: using MSI. >> [ 3.097614] [drm] radeon: irq initialized. >> >> On recent kernels (3.16 through 3.18-rc4, perhaps), doing anything >> graphics intensive seems to cause my system to become unusable for >> tens of seconds. Pointing Firefox at Google Maps is a big offender -- >> it can take several minutes for me to move my mouse far enough to >> close the tab and get my computer back. >> >> On bootup, I get this warning: >> [drm:btc_dpm_set_power_state] *ERROR* >> rv770_restrict_performance_levels_before_switch failed >> >> Setting radeon.dpm=0 seems to work around this problem at the cost of >> giving my rather slow graphics. >> >> Are there known issues here? > > > Can you bisect the kernel, or at least isolate which kernel version first > introduced the problem?
With whatever userspace I'm running, I'm seeing it 3.13, 3.14, 3.15, 3.16, and 3.18-rc4+. I haven't tried other versions. With radeon.dpm=0, I can still trigger short stalls (around one second), but I seem unable to trigger long stalls easily. (I say easily because, just as I was typing this email, my system stalled for about a minute.) --Andy > > > -- > Earthling Michel Dänzer | http://www.amd.com > Libre software enthusiast | Mesa and X developer -- Andy Lutomirski AMA Capital Management, LLC
