On 31/07/15 17:36, Ilia Mirkin wrote:
On Fri, Jul 31, 2015 at 6:27 AM, Bryan O'Donoghue pure.logic@nexus-software.ie wrote:
ah no... 2.4.60 is right...
Yes so Ilia - I've switched out 2.4.60 as per your suggestion to 2.4.56 (getting the version numbers right :) ) and it's still definitely giving me the multiple instances message.
This is going to sound like a stupid question, but I'll ask anyways -- you *did* restart chrome after changing libdrm versions, right?
There are no stupid questions - just stupid answers like 'whaddya mean restart chrome'
Seriously though, I've restarted the machine each time I've tried to switch out those libraries, so it's definitely not that.
I was going to mention that there were a handful of fixes in libdrm, potentially since 2.4.56 (I forget the exact versions), but if 2.4.60 also fails, then that would have them.
There was a final assert() added in 2.4.62, but that was to better isolate the cause of weirdo crashes (i.e. crash when the thing going wrong happens rather than stashing bad pointers for later very confusing dereference). Not GPU crashes.
Just for your information,
nouveau E[ PFIFO][0000:01:00.0] PFIFO: read fault at 0x0003e21000 [PAGE_NOT_PRESENT] from (unknown enum 0x00000000)/GPC0/(unknown enum 0x0000000f) on channel 0x007f80c000 [unknown]
means that there was VM fault from an unknown gpu unit (???) when reading some resource by the GPU.
OK, I was assuming it was a side effect of the -EINVAL when we get the multiple instances message.
(The GPU has its own MMU.) Unfortunately this can happen for one of a million reasons, the biggest one being "unknown", but mesa definitely doesn't handle command submission failures particularly well... should probably add a "fail 1% of the time" thing to help fix that up.
Do you have a reproducible way of achieving the multiple buffer on validation list thing? What GPU do you have? (Looking for a codename, not a marketing name... lspci should have it... GFxxx or GKxxx or
01:00.0 VGA compatible controller: NVIDIA Corporation GK107M [GeForce GT 750M Mac Edition] (rev a1) (prog-if 00 [VGA controller]) Subsystem: Apple Inc. Device 0130 Flags: bus master, fast devsel, latency 0, IRQ 45 Memory at c0000000 (32-bit, non-prefetchable) [size=16M] Memory at 80000000 (64-bit, prefetchable) [size=256M] Memory at 90000000 (64-bit, prefetchable) [size=32M] I/O ports at 1000 [size=128] Expansion ROM at c1000000 [disabled] [size=512K] Capabilities: [60] Power Management version 3 Capabilities: [68] MSI: Enable+ Count=1/1 Maskable- 64bit+ Capabilities: [78] Express Endpoint, MSI 00 Capabilities: [b4] Vendor Specific Information: Len=14 <?> Capabilities: [100] Virtual Channel Capabilities: [128] Power Budgeting <?> Capabilities: [420] Advanced Error Reporting Capabilities: [600] Vendor Specific Information: ID=0001 Rev=1 Len=024 <?> Capabilities: [900] #19 Kernel driver in use: nouveau
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