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<b><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - [NV86] Distorted graphics on NVIDIA GeForce 8400M G after upgrade the kernel to 3.7.0 version"
href="https://bugs.freedesktop.org/show_bug.cgi?id=58378#c58">Comment # 58</a>
on <a class="bz_bug_link
bz_status_NEW "
title="NEW --- - [NV86] Distorted graphics on NVIDIA GeForce 8400M G after upgrade the kernel to 3.7.0 version"
href="https://bugs.freedesktop.org/show_bug.cgi?id=58378">bug 58378</a>
from <span class="vcard"><a class="email" href="mailto:awl1@gmx.net" title="Andreas Loew <awl1@gmx.net>"> <span class="fn">Andreas Loew</span></a>
</span></b>
<pre><span class="quote">> > [aloew@aloew-lap envytools-master]$ sudo ./nva/nvapeek 10200c 10
> > 0010200c: SS SS SS SS SS SS SS SS SS SS SS SS SS SS SS SS
>
> nvapeek 10200c without the 10. (Not sure what that does.... maybe reads out
> 0x10 regs)</span >
yes - seems to read 10 registers:
[aloew@aloew-lap envytools-master]$ sudo ./nva/nvapeek 10200c
0010200c: SS
<span class="quote">> Well, no one's heard of a "missing" PCRYPT before, but it's certainly
> conceivable that certain blocks were omitted. I'd feel better with that
> diagnosis if more people chimed in saying that they had the same issue.</span >
>From the screenshots of the corrupted graphics, I definitely think that this is
the exact same issue.
But I fully agree that it is a pity that nobody of the folks who had raised
this previously and/or commented, do react now that it has probably been
tracked down to its root cause.
And something else seems interesting:
All other people who saw the corruption issue (except nemasu with his/her 8800
GTS, who might have seen a different issue indeed from the dmesg output) also
were using early G86 chips, particularly 8400M-based, and mostly the "mobile"
variants...
Maybe NVidia omitted part of the 8400 functionality in the mobile variants?
This would again make up a nice (and easy) question to them...!? ;-)
Thanks again & BR,
Andreas</pre>
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