Red Hat Bugzilla – Bug 541257
FN5 & FN6 keys fail to control brightness on sony vaio VGN-FW51Z/H laptop.
Last modified: 2014-11-09 17:32:15 EST
Description of problem:
On my Sony VGN-FW51ZF/H laptopn then FN5 + FN6 Keys do not allow brightness to be controlled.
Version-Release number of selected component (if applicable):
Steps to Reproduce:
1. Press the FN5 key
Brightness of screen does not change
Brightness of screen should dim.
I think I've narrowed it down to either the sony-laptop or acpi modules.
When pressing other keys, like the "AV Mode" key, I get a message in /var/log/messages which states.
Nov 25 12:08:56 localhost kernel: sony-laptop: Unknown event: 0x100 0xa1
Nov 25 12:08:56 localhost kernel: sony-laptop: Unknown event: 0x100 0x21
However, pressing the FN5 + FN6 keys does not produce these messages so I'm assuming that they are being trapped but not working correctly.
Please try this workaround: reboot your machine with the 'nomodeset' kernel parameter. This might be a duplicate of bug 519105 ?
Reassigned to correct component
Fedora Bugzappers volunteer triage team
I tried the nomodeset option and it had no effect. The FN5/6 keys still do not affect the brightness of the display.
(In reply to comment #1)
> Please try this workaround: reboot your machine with the 'nomodeset' kernel
> parameter. This might be a duplicate of bug 519105 ?
The question was not answered but I went through the bug #519105 I'm convinced this bug duplicates #519105. Therefore I close this as a duplicity.
*** This bug has been marked as a duplicate of bug 519105 ***
I'm not sure what you mean by "This question was not answered" as if you'd taken just a few seconds you would have spotted my reponse which, to save you having to waste your obviously valueable time, I have reposted here.
"I tried the nomodeset option and it had no effect. The FN5/6 keys still do not
affect the brightness of the display."..
I'm sorry I didn't explain it with accuracy. You really reacted on the comment #1 (I' spent more time than seconds with this issue :-)). I've mentioned the second part about duplicity to #519105 that is key point.