Screen brightness:
hotkeys do not work both on debian and kubuntu 9.04. See xrandr below.
(Andika, thanks for your input!)
However, on kubuntu the battery/powersave plasmoid has a slider that *can*
control screen brightness. The same setup does not work on debian.
Screen resolution and setup:
I have patched grub-pc package to add support to the GMA chipset on the
915resolution module. With that setup X does start with the correct
resolution (1366x768) without further configuration. Details follow (general
steps from memory, DO NOT just copy and paste).
1. Patch grub-pc with the attached patch:
apt-get source grub-pc
cd grub2-1.96+20090825/debian/grub-extras/commands/i386
patch < 915resolution.c.patch
2. Build the package and install
apt-get build-deps grub-pc
cd grub2-1.96+20090825
dpkg-buildpackage
cd ..
dpkg -i grub2-1.96+20090825-XXX.deb
3. Configure grub-pc:
(I strongly recommend that this setup is verified with the standalone
915resolution *before* grub configuration)
edit /etc/grub.d/01_915resolution and add
echo insmod 915resolution
echo 915resolution 58 1366 768 32
chmod +x /etc/grub.d/01_915resolution
update-grub
do not reboot if you get any errors
4. Reboot and your X should start with the right resolution.
If someone else tries that, please report back.
Regards,
Pedro
On Wed, Aug 26, 2009 at 8:06 PM, Andika Triwidada <[email protected]> wrote:
> On Thu, Aug 27, 2009 at 4:43 AM, Pedro Bulach Gapski<[email protected]>
> wrote:
> > Andika,
> >
> >> Would you mind trying this?
> >> $ xrandr --output LVDS --set BACKLIGHT_CONTROL native
> >>
> >> Also test other BACKLIGHT_CONTROL values from
> >> $ xrandr --prop
> >> if first command above failed.
> >>
> >> --
> >> andika
> >
> > those are the results on debian squeeze with vesa driver:
> > Script started on Wed 26 Aug 2009 06:33:52 PM BRT
> > gap...@meteor:~$ xrandr --prop
> > Screen 0: minimum 640 x 480, current 1368 x 768, maximum 1368 x 768
> > default connected 1368x768+0+0 0mm x 0mm
> > 1366x768 61.0
> > 1024x768 61.0
> > 800x600 0.0
> > 640x480 0.0
> > 1368x768 61.0*
>
> Can't help anymore here
>
> > and following are the results on the same hardware with kubuntu 9.04 and
> > poulsbo driver:
> > xrandr --prop
> > Screen 0: minimum 320 x 200, current 1366 x 768, maximum 1366 x 1366
> > LVDS0 connected 1366x768+0+0 (normal left inverted right x axis y axis)
> 0mm
> > x 0mm
> > BACKLIGHT: 100 (0x00000064) range: (0,100)
> > PANELFITTING: 0 (0x00000000) range: (0,2)
> > 1366x768 57.6*+
>
> But there's still hope here :D
> $ xrandr --output LVDS --set BACKLIGHT any_value_between_0_and_100
>
> Not sure how to link that to brightness control hotkeys though :(
>
> --
> andika
>
--- 915resolution.c.orig 2009-08-26 09:35:45.000000000 -0300
+++ 915resolution.c 2009-08-26 09:48:06.000000000 -0300
@@ -106,12 +106,12 @@
typedef enum {
CT_UNKWN, CT_830, CT_845G, CT_855GM, CT_865G, CT_915G, CT_915GM, CT_945G, CT_945GM, CT_945GME,
- CT_946GZ, CT_G965, CT_Q965, CT_965GM, CT_G33, CT_Q33, CT_Q35
+ CT_946GZ, CT_G965, CT_Q965, CT_965GM, CT_G33, CT_Q33, CT_Q35, CT_500GMA
} chipset_type;
char * chipset_type_names[] = {
"UNKNOWN", "830", "845G", "855GM", "865G", "915G", "915GM", "945G", "945GM", "945GME",
- "946GZ", "G965", "Q965", "965GM", "G33", "Q33", "Q35"
+ "946GZ", "G965", "Q965", "965GM", "G33", "Q33", "Q35", "500GMA"
};
typedef enum {
@@ -285,6 +285,10 @@
type = CT_Q33;
break;
+ case 0x81008086:
+ type = CT_500GMA;
+ break;
+
default:
type = CT_UNKWN;
break;
@@ -521,6 +525,7 @@
case CT_G33:
case CT_Q35:
case CT_Q33:
+ case CT_500GMA:
outl(0x80000090, 0xcf8);
map->b1 = inb(0xcfd);
map->b2 = inb(0xcfe);
@@ -566,6 +571,7 @@
case CT_G33:
case CT_Q35:
case CT_Q33:
+ case CT_500GMA:
outl(0x80000090, 0xcf8);
outb(map->b1, 0xcfd);
outb(map->b2, 0xcfe);
@@ -825,6 +831,9 @@
else if (!strcmp(argv[index], "Q33")) {
*forced_chipset = CT_Q33;
}
+ else if (!strcmp(argv[index], "500GMA")) {
+ *forced_chipset = CT_500GMA;
+ }
else {
*forced_chipset = CT_UNKWN;
}
