[Bug 108336] [CI][DRMTIP] igt@*crc tests* - warn / dmesg-warn - Suspicious CRC: it looks like the CRC read back was from a register in a powered down well

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=108336

--- Comment #4 from Jani Saarinen <jani.saarinen at intel.com> ---
>From Ville (fdo bug 106974)
> I was just looking at crcs on icl and spotted the following:
> 0x00098785 0xd2d6ad2b 0x00000000 0x00000000 0x00000000 0x00000000
> 0x00098786 0xd2d6ad2b 0x00000000 0x00000000 0x00000000 0x00000000
> 0x0009879b 0xffffffff 0x00000000 0x00000000 0x00000000 0x00000000
> 0x0009879c 0xd2d6ad2b 0x00000000 0x00000000 0x00000000 0x00000000
> 0x0009879d 0x82618fd1 0x00000000 0x00000000 0x00000000 0x00000000
> 
> So the frame counter jumps by quite a lot there and we get a bogus crc at
> the same time. As I immediately suspected the culprit is PSR. We should
> probably disable PSR while CRC capturing is enabled.

-- 
You are receiving this mail because:
You are the QA Contact for the bug.
You are on the CC list for the bug.
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <https://lists.freedesktop.org/archives/intel-gfx-bugs/attachments/20181219/3b2fd07d/attachment.html>