Comment 9 for bug 1551811

I took a look and was able to repro on Arale with the latest rc-proposed but it's difficult.

In my instance of the crash, I did not see the PVR kernel logs reported by Simon in comment #7. (Also, I don't see them in the logs attached by Dave and Victor). How were they obtained?

From the logs I obtained, I saw a couple of lines spewed out by the PVR kernel side :

./logs/logs:Mar 17 17:51:36 ubuntu-phablet kernel: [ 688.646227] PVR_K:(Error): 104: RGXGetDeviceHealthStatus: KCCB for DM2 has not progressed (ROFF=10 WOFF=11) [0, ]
./logs/logs:Mar 17 20:55:38 ubuntu-phablet kernel: [ 2670.497641] PVR_K:(Error): 105: RGXGetDeviceHealthStatus: KCCB for DM0 has not progressed (ROFF=1 WOFF=2) [0, ]

but not when the crash happened. So I don't think they are related.

I did notice a constant stream of the following messages, but they seem to happen even when the camera is seemingly working normally. And sometimes, they don't happen.
...
./logs/logs:Mar 17 21:04:59 ubuntu-phablet kernel: [ 7.331986] [mt-i2c]ERROR,454: id=0,addr: 10, transfer error
./logs/logs:Mar 17 21:04:59 ubuntu-phablet kernel: [ 7.363560] [mt-i2c]ERROR,454: id=0,addr: 10, transfer error
./logs/logs:Mar 17 21:04:59 ubuntu-phablet kernel: [ 7.363701] [mt-i2c]ERROR,454: id=0,addr: 10, transfer error
...

I can investigate the GL (PVR) driver side of things more if I someone can tell me how/when PVRSRV related logs appear and how to collect them?