> -----Original Message----- > From: [email protected] > [mailto:[email protected]] On Behalf Of Micah Stetson > Sent: Sunday, May 09, 2010 9:24 AM > To: meego-dev > Subject: [MeeGo-dev] Backlight/ACPI issues on EeePC 1001P > > I'm using Moblin 2.1 with the MeeGo kernel on several ASUS EeePC 1001P > netbooks. The backlight behaves strangely, and I'd appreciate it if > somebody could point me in the right direction to figure out how to > fix it. I'm quite comfortable with C, but I've never messed with ACPI > before, and I think that's where the problem is. > /proc/acpi/video/VGA/LCDD says this: > > levels: 1 5 8 10 13 16 20 22 25 27 29 30 32 33 35 36 > current: 1 > > The problem is that the levels aren't actually in order of visible > brightness. Here's the real order, dimmest to brightest: > > 16/32 1/33 35 20/36 5 22 8/25 10/27 13/29 30 > > I can't distinguish visually between the pairs separated with slashes. > It looks to me like only the low four bits of the number are > significant. Here's the same sequence modulo 16: > > 0 1 3 4 5 6 8/9 10/11 13 14 > > The real problem is that when Moblin goes to screensaver and turns off > the backlight, it turns it back on with brightness 36 -- that's one of > the lower settings visually, but the "brightest" numerically. Can > anybody point me to what I should check to help the kernel get the > level numbers right? > > These machines have an Atom N450 with Intel Pineview graphics > (8086/a011). I'm using Moblin 2.1 with the 2.6.33.2-5.1-netbook > kernel from the MeeGo repo (I needed an updated ath9k driver). > > Any help or direction is appreciated, >
Please update your BIOS to latest version first. One update is said to fix the brightness table. http://support.asus.com/download/download.aspx?model=EEE+PC+1001P -Yong _______________________________________________ MeeGo-dev mailing list [email protected] http://lists.meego.com/listinfo/meego-dev
