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Tasklist

FS#46434 - [linux] slow response on brightness control - lenovo u330p

Attached to Project: Arch Linux
Opened by Jakub Hlavizna (hlavijak) - Friday, 25 September 2015, 11:50 GMT
Last edited by Doug Newgard (Scimmia) - Thursday, 08 October 2015, 13:17 GMT
Task Type Bug Report
Category Kernel
Status Closed
Assigned To Tobias Powalowski (tpowa)
Thomas Bächler (brain0)
Architecture x86_64
Severity Low
Priority Normal
Reported Version
Due in Version Undecided
Due Date Undecided
Percent Complete 100%
Votes 0
Private No

Details

Description:

Pressing the brightness up/down button once, works fine, multiple presses, or long press act as if I pressed only once for about two seconds. After that, the brightness updates to the new state (considering the other presses), and freeze again.

The slider also acts funny, trying to "pull back" to the old position. Scrolling over it acts normally while scrolling down, though it still "pull back" when scrolling up.

It starts after upgrade to Linux kernel >= 4.0, so now when Linux-lts was upgraded it starts. The same problem is with regular kernel package (linux).

Additional info:
* package version(s) - Linux-lts 4.1.8-1

* config and/or log files etc.


Steps to reproduce:
Try to change brightness on Lenovo Ideapad U33Op
This task depends upon

Closed by  Doug Newgard (Scimmia)
Thursday, 08 October 2015, 13:17 GMT
Reason for closing:  Fixed
Comment by Jakub Hlavizna (hlavijak) - Thursday, 08 October 2015, 08:58 GMT
The problem was fixed in standard Archlinux kernel.

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