https://bugzilla.kernel.org/show_bug.cgi?id=200045
--- Comment #16 from Sergey Larin (cerg2010cerg2...@mail.ru) ---
My name is Sergey Larin, I added it to my account. Thanks for your help!
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--- Comment #15 from Wolfram Sang (w...@the-dreams.de) ---
I will just revert this commit. I have no further ideas for remote debugging. I
think reverting is the safest solution for now, I can't find any patches since
v4.16 which added users to th
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--- Comment #14 from cerg2010cerg2...@mail.ru ---
Still nothing changed... This is what I got in both cases:
[ 57.656675] Radeon i2c bit bus 0x90: initial SCL state 1
[ 57.656678] Radeon i2c bit bus 0x90: initial SDA state 1
[ 57.656805] Ra
https://bugzilla.kernel.org/show_bug.cgi?id=200045
Wolfram Sang (w...@the-dreams.de) changed:
What|Removed |Added
Attachment #276551|0 |1
is obsolete|
https://bugzilla.kernel.org/show_bug.cgi?id=200045
--- Comment #12 from cerg2010cerg2...@mail.ru ---
Teset this, but it did not help.
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https://bugzilla.kernel.org/show_bug.cgi?id=200045
--- Comment #11 from Wolfram Sang (w...@the-dreams.de) ---
I have sent another patch, let's hope it really is this issue:
http://patchwork.ozlabs.org/patch/929798/
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--- Comment #10 from cerg2010cerg2...@mail.ru ---
Here is the output:
[ 23.056329] (null): initial SCL state 1
[ 23.056330] (null): initial SDA state 1
[ 23.056532] (null): initial SCL state 1
[ 23.056534] (null): initial SDA state 1
https://bugzilla.kernel.org/show_bug.cgi?id=200045
--- Comment #9 from Wolfram Sang (w...@the-dreams.de) ---
Created attachment 276551
--> https://bugzilla.kernel.org/attachment.cgi?id=276551&action=edit
print initial states to allow further debug
Thanks for testing the patches, pity it didn't
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--- Comment #8 from cerg2010cerg2...@mail.ru ---
Ok, I tested the patches, but they did not fix the problem. Nothing changed,
and the log is empty. I tried to apply them separately and both at the same
time. Note that second one seems to depend on
https://bugzilla.kernel.org/show_bug.cgi?id=200045
--- Comment #7 from Alex Deucher (alexdeuc...@gmail.com) ---
(In reply to Wolfram Sang from comment #5)
> Sure. But reading the original description above, I think the default use
> case is to not use hw_i2c. It was just added to try to work aroun
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--- Comment #6 from Wolfram Sang (w...@the-dreams.de) ---
So, I really posted the patches now. Sorry, I got side-tracked.
They can be found here:
http://patchwork.ozlabs.org/patch/929185/
http://patchwork.ozlabs.org/patch/929186/
I set you on C
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--- Comment #5 from Wolfram Sang (w...@the-dreams.de) ---
Sure. But reading the original description above, I think the default use case
is to not use hw_i2c. It was just added to try to work around the regression.
And that led to another bug. Or
https://bugzilla.kernel.org/show_bug.cgi?id=200045
--- Comment #4 from Alex Deucher (alexdeuc...@gmail.com) ---
hw_i2c doesn't use bit banging, it uses the hw i2c engine.
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--- Comment #3 from cerg2010cerg2...@mail.ru ---
I did some more research and it turns out that 2) happens if I change
brightness level right after X starts, even in 4.15 kernel. If I wait a bit,
everything works good, including 4.17.1. Software I
https://bugzilla.kernel.org/show_bug.cgi?id=200045
--- Comment #2 from Wolfram Sang (w...@the-dreams.de) ---
Okay, these are actually two bug reports meanwhile:
1) 3e5f06bed72fe72166a6778f630241a893f67799 causes a regression when
bit-banging I2C in software and results in keeping the screen black
https://bugzilla.kernel.org/show_bug.cgi?id=200045
--- Comment #1 from cerg2010cerg2...@mail.ru ---
Ok, actually this is 4.17 issue; on 4.16 hw_i2c=1 fixes the issue completely,
but on 4.17 changing backlight in Xorg (using keys) causes a reboot, fbcon
works fine though.
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cerg2010cerg2...@mail.ru changed:
What|Removed |Added
Summary|i2c-algo-bit: black screen |black screen on 'radeon'
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