Can turning off drm_kms_helper polling affect screen brightness control?

Posted by dodecaphonic on Ask Ubuntu See other posts from Ask Ubuntu or by dodecaphonic
Published on 2011-01-15T13:55:57Z Indexed on 2011/01/15 13:59 UTC
Read the original article Hit count: 214

Filed under:

xorg

|

KMS

I have a Samsung R430 notebook that has been running Ubuntu for close to a year, now. Since I've upgrated to Maverick, I've been dealing with little, but increasingly annoying issues, that put my faith to question.

The first one, a CPU-intensive set of drm_kms_helper, made me compile my own kernel and set polling to off just so I could move my mouse without frequent stuttering. That led me to dealing with a screen that gets dimmer and dimmer after each sleep/wake-up cycle, which eventually leads me to reboot.

Since I have seen some KMS and brightness related bugs around, I was wondering if it is a definite cause for my problem. If so, has there been any advance on the excessive polling issue for those of us plagued by it?

© Ask Ubuntu or respective owner

Related posts about xorg

Ubuntu 11.04 update fail!

as seen on Ask Ubuntu - Search for 'Ask Ubuntu'
I try to update Ubuntu Natty Narwhal, but I got this error: dpkg: .../xserver-xorg-core_2%3a1.9.99.901+git20110131.be3be758-0ubuntu6_i386.deb miatt xserver-xorg-core-t is tartalmazza: xserver-xorg-core breaks xserver-xorg-video-8 nvidia-current provides xserver-xorg-video-8 and is present and… >>> More
Removing broken packages on distro update (13.04 to 13.10)

as seen on Ask Ubuntu - Search for 'Ask Ubuntu'
i'm kinda new to linux. last night i tried upgrading from 13.04 to 13.10 but i got the "could not calculate" error. i read this question and found this error in the main log: Dist-upgrade failed: 'E:Unable to correct problems, you have held broken packages.' and here's a list of my broken packages… >>> More
Ubuntu 12.10 broken, shutdown while updating

as seen on Ask Ubuntu - Search for 'Ask Ubuntu'
I got the following problem: My PC shutdown while upgrading from 12.04 to 12.10. Everything seems to work but I can't install the missing updates. It always tells me to run apt-get install -f, but when I do so it just says: (It's in German, hope it doesn't matter) Paketlisten werden gelesen... Fertig Abhängigkeitsbaum… >>> More
How can I fix apt-get autoremove wanting to uninstall most of my packages?

as seen on Ask Ubuntu - Search for 'Ask Ubuntu'
I did change my packages in synaptic from manually installed to Automatically (they were not manually installed but automatically). Now they are marked for Autoremove. I tested it with sudo apt-get autoremove and the result is shown below (a reduced version because its almost all packages). I remember… >>> More
MacPorts - Installing Port, Dependencies Failed

as seen on Stack Overflow - Search for 'Stack Overflow'
I am attempting to install xulrunner on OSX 10.6.3 using the following: sudo port install xulrunner However, I am receiving the following error: nat-10-200-136-126:phoneyc-new $ sudo port install xulrunner ---> Computing dependencies for xulrunner ---> Activating zlib @1.2.5_0 Error: The… >>> More

Related posts about KMS

KMS host setup: Windows 8 and Server 2012 support

as seen on Server Fault - Search for 'Server Fault'
As our client computer team is in the process of creating some Windows 8 images I have been charged with the setup of the KMS host to support this OS. I do currently run a 2003 KMS host that serves Office 2010, Server 2008, and Windows 7. However from looking at this Technet page it would seem that… >>> More
Why won't my Windows 7 KMS key work on my Server 2008 KMS server?

as seen on Server Fault - Search for 'Server Fault'
Our Microsoft volume licensing site was recently updated to include our Windows 7 and Server 2008 R2 KMS keys. We have an existing KMS server running on Server 2008 (not R2). In an attempt to be proactive about supporting the new OSes in our environment, I unregistered the old KMS key with slmgr… >>> More
KMS / Office 2010... please point to documentation.

as seen on Server Fault - Search for 'Server Fault'
Trying to find out how to "modify" KMS to also accept the Office 2010 KMS key. Can anyone point me to some document about this? Basically - do I have to install an update to KMS? I wand my KMS server to authenticate both, Windows (It currently has a DataCenter R2 KMS key installed) as well as Office… >>> More
Can you configure multiple KMS hosts in a primary / secondary relationship?

as seen on Server Fault - Search for 'Server Fault'
We have two datacenters in our environment: primary and DR. I need to deploy a KMS service, and to be proactive, I would like to have a host in both datacenters. From what I have read, you can have up to 6 hosts without calling Microsoft, and it appears that what will happen is that a SRV record… >>> More
Ubuntu on the Sony Vaio VPCY 21S1E

as seen on Ask Ubuntu - Search for 'Ask Ubuntu'
My girlfriend got a new Subnotebook for Christmas (Sony Vayo VPCY21S1E), which comes with an "Intel HD graphics" vga adaptor. When I try to boot the Ubuntu installer from USB, the screen goes blank after a short while, before I even see the Ubuntu logo. However, when I select "nomodeset" in the boot… >>> More