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The_Document
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PostPosted: Fri Feb 23, 2018 7:57 pm    Post subject: [Solved] Laptop Screen Brightness With KDE Not Functioning. Reply with quote

Ii have latest powerdevil 5.12.2 with latest KDE unstable and I enabled brightness-control flag however I cannot change screenbrightness using function keys. However I can change it useing the scroller in power managment settings even thought it jumps around when I scroll it, it doesen't jump around when I login with root. I have to resort to use xbacklight to change brightness, how do I make function keys work?

Last edited by The_Document on Fri Feb 23, 2018 11:12 pm; edited 1 time in total
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asturm
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PostPosted: Fri Feb 23, 2018 8:00 pm    Post subject: Reply with quote

This is a known bug in >= Plasma-5.12 the KDE developers are currently trying to figure out how to fix.

The_Document wrote:
I find it harsh how gentoo users must wait a long while to obtain latest revisions of many softwares.

Things like these are the reason why we do not stabilise early versions of a new release.
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The_Document
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PostPosted: Fri Feb 23, 2018 8:10 pm    Post subject: Reply with quote

asturm wrote:
This is a known bug in >= Plasma-5.12 the KDE developers are currently trying to figure out how to fix.

The_Document wrote:
I find it harsh how gentoo users must wait a long while to obtain latest revisions of many softwares.

Things like these are the reason why we do not stabilise early versions of a new release.


Thats nonsence because upgrading to latest KDE resolved 2 issues I had with it. Mind posting powerdevil bug?
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asturm
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PostPosted: Fri Feb 23, 2018 8:13 pm    Post subject: Reply with quote

The_Document wrote:
Thats nonsence because

It's not. As always, new major releases fix some, and add some issues, and the subsequent point releases then mostly only fix bugs.

You can search for powerdevil bugs on bugs.kde.org: https://bugs.kde.org/buglist.cgi?quicksearch=powerdevil&list_id=1498055
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The_Document
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PostPosted: Fri Feb 23, 2018 11:11 pm    Post subject: Reply with quote

asturm wrote:
The_Document wrote:
Thats nonsence because

It's not. As always, new major releases fix some, and add some issues, and the subsequent point releases then mostly only fix bugs.

You can search for powerdevil bugs on bugs.kde.org: https://bugs.kde.org/buglist.cgi?quicksearch=powerdevil&list_id=1498055


I fixed the issue by using a work around I simply reassigned screen brightness to different keys.
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jbcjorge
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PostPosted: Wed Feb 28, 2018 8:21 pm    Post subject: Reply with quote

I had the same issue, but mine was related (I think) to the GCC-7.3.0 upgrade I made. The solution was to recompile all dependencies and then recompile KDE
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The_Document
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PostPosted: Wed Feb 28, 2018 10:53 pm    Post subject: Reply with quote

jbcjorge wrote:
I had the same issue, but mine was related (I think) to the GCC-7.3.0 upgrade I made. The solution was to recompile all dependencies and then recompile KDE


You mean I should upgrade gcc and rebuild kde?
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jbcjorge
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PostPosted: Wed Feb 28, 2018 11:14 pm    Post subject: Reply with quote

Not really, what I mean is that wrong behavior was happening to me after I upgraded to 5.12.2.

I upgraded to GCC 7.3.0 before the KDE update. Before the update the brightness controls were working. After the update stop working. In my case to make things work again as intended I needed to rebuild dependencies and KDE (I didn't stop to check what was really needed)
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The_Document
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PostPosted: Wed Feb 28, 2018 11:27 pm    Post subject: Reply with quote

jbcjorge wrote:
Not really, what I mean is that wrong behavior was happening to me after I upgraded to 5.12.2.

I upgraded to GCC 7.3.0 before the KDE update. Before the update the brightness controls were working. After the update stop working. In my case to make things work again as intended I needed to rebuild dependencies and KDE (I didn't stop to check what was really needed)


Im not on 5.12 Im on unstable because I tried to solve the issue but didn't work. What are you recommending I do about this?
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asturm
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PostPosted: Tue Mar 13, 2018 11:19 am    Post subject: Reply with quote

Is this still a problem with 5.12.3?
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The_Document
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PostPosted: Tue Mar 13, 2018 2:56 pm    Post subject: Reply with quote

asturm wrote:
Is this still a problem with 5.12.3?

Yep
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PrSo
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PostPosted: Sat Apr 21, 2018 7:16 am    Post subject: Reply with quote

The_Document wrote:
asturm wrote:
Is this still a problem with 5.12.3?

Yep


I have hit the same issue with 5.12.4 after update.
Please, try to remove ~/.config/kglobalshortcutsrc, and ~/.config/khotkeysrc when you are _NOT_ logged in to plasma desktop, and login again.

I have solved problem this way, so it a chance it will work for you.
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The_Document
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PostPosted: Sat Apr 21, 2018 7:18 am    Post subject: Reply with quote

PrSo wrote:
The_Document wrote:
asturm wrote:
Is this still a problem with 5.12.3?

Yep


I have hit the same issue with 5.12.4 after update.
Please, try to remove ~/.config/kglobalshortcutsrc, and ~/.config/khotkeysrc when you are _NOT_ logged in to plasma desktop, and login again.

I have solved problem this way, so it a chance it will work for you.


This issue has been resolved, it was a kernel config issue.
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asturm
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PostPosted: Sat Apr 21, 2018 10:33 am    Post subject: Reply with quote

Thanks for the heads-up, one less issue to think about for 5.12 stabilisation.
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