[Bug 97822] Split screen/display corruption issue on HP EliteOne 800 G2 23-in Touch AIO

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=97822

--- Comment #35 from Ville Syrjala <ville.syrjala at linux.intel.com> ---
(In reply to r.r.arends from comment #33)
> (In reply to Ville Syrjala from comment #31)
> > Hmm. I guess one weird possibility would be that the EDID would be at some
> > alternate address. I can't recall if that's allowed by the spec, but IIRC in
> > the distant past there were a few addresses that could house the EDID.
> > 
> > Please run something like this as root so we can probe the entire i2c
> > address range:
> > modprobe i2c-dev ; i2cdetect `grep DPDDC-A /sys/class/i2c-dev/*/name | cut
> > -d '/' -f 5 | cut -d '-' -f 2`
> 
> root at fuckeduphp:~# modprobe i2c-dev ; i2cdetect `grep DPDDC-A
> /sys/class/i2c-dev/*/name | cut -d '/' -f 5 | cut -d '-' -f 2`
> WARNING! This program can confuse your I2C bus, cause data loss and worse!
> I will probe file /dev/i2c-3.
> I will probe address range 0x03-0x77.
> Continue? [Y/n] Y
>      0  1  2  3  4  5  6  7  8  9  a  b  c  d  e  f
> 00:          03 04 05 06 07 08 09 0a 0b 0c 0d 0e 0f
> 10: 10 11 12 13 14 15 16 17 18 19 1a 1b 1c 1d 1e 1f
> 20: 20 21 22 23 24 25 26 27 28 29 2a 2b 2c 2d 2e 2f
> 30: 30 -- -- -- -- 35 -- -- 38 39 3a 3b 3c 3d 3e 3f
> 40: 40 41 42 43 44 45 46 47 48 49 4a 4b 4c 4d 4e 4f
> 50: -- -- -- -- -- -- -- 57 -- -- -- -- -- -- -- --
> 60: 60 61 62 63 64 65 66 67 68 69 6a 6b 6c 6d 6e 6f
> 70: 70 71 72 73 74 75 76 77

That... looks totally crazy. So it seems to be acking almost all addresses,
except the ones we might actually care about.

-- 
You are receiving this mail because:
You are the QA Contact for the bug.
You are on the CC list for the bug.
You are the assignee for the bug.
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <https://lists.freedesktop.org/archives/intel-gfx-bugs/attachments/20161007/743e8be5/attachment.html>