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xserver-xorg-video-via package

Low brigtness 12.04 and VIA K8M800 graphics

Asked by Martin

Sure this has been answered but - I have very low brightness on a CRT monitor and VIA K8M800 on-board graphics. Also the brightess slider is missing from the 'Brightness and lock' system option. Any fixes?

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Revision history for this message
actionparsnip (andrew-woodhead666) said : 		#1

Can you give the output of:

sudo lshw -C display; lsb_release -a; uname -a

Thanks

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actionparsnip (andrew-woodhead666) said : 		#2

Also:

sudo dmidecode -t 1

What is output?

Thanks

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Martin (martin-kitt) said : 		#3

Sure,

says

Distributor ID: Ubuntu
Description: Ubuntu 12.04.1 LTS
Release: 12.04
Codename: precise

and

System Information
 Manufacturer: Packard Bell NEC
 Product Name: 00000000000000000000000
 Version: PB34207201
 Serial Number: 049656720351
 UUID: 301764A9-E25F-DA11-8000-4E45435F4349
 Wake-up Type: Power Switch

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Martin (martin-kitt) said : 		#4

Sorry - bit mising:-

# dmidecode 2.11
SMBIOS 2.3 present.

Handle 0x0001, DMI type 1, 25 bytes
System Information
 Manufacturer: Packard Bell NEC
 Product Name: 00000000000000000000000
 Version: PB34207201
 Serial Number: 049656720351
 UUID: 301764A9-E25F-DA11-8000-4E45435F4349
 Wake-up Type: Power Switch

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actionparsnip (andrew-woodhead666) said : 		#5

and the output of:

uname -a

If you'd copied it as one command, you wouldn't have missed anything...

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Martin (martin-kitt) said : 		#6

Linux martin-00000000000000000000000 3.2.0-31-generic-pae #50-Ubuntu SMP Fri Sep 7 16:39:45 UTC 2012 i686 athlon i386 GNU/Linux

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actionparsnip (andrew-woodhead666) said : 		#7

Run:

gksudo gedit /etc/default/grub

Find this line:
GRUB_CMDLINE_LINUX_DEFAULT="quiet splash"

Change it to:
GRUB_CMDLINE_LINUX_DEFAULT="quiet splash acpi_backlight=vendor"

Save the new file, close gedit and run:
sudo update-grub

Reboot to test

Revision history for this message
Martin (martin-kitt) said : 		#8

Didn't work unfortunately.

After some searching found a tip which did:-

Create a file to include the line 'xgamma - gamma 1.7' (or whatever value suits).

In properties make it executable and add it to the 'startup apps.'

Works fine. There may have been some confusion - I am using a desktop with a CRT monitor not a laptop.

Thanks for the assistance anyway.