I have tried both the proprietary drivers(fglrx) given under Software sources->Additional drivers then computer opens in command line mode. I have tried all
I have also tried manually installing amd-driver-installer-catalyst-13.1-linux-x86.x86_64 but it also failed.
I followed this thread(http://ubuntuforums.org/showthread.php?t=2088190) but no change in brightness.
Code:
gautam@gautam-laptop:~$ cat /proc/cmdline
BOOT_IMAGE=/boot/vmlinuz-3.5.0-17-generic root=UUID=706abb01-8cff-48d5-86d6-4812dc2e86ad ro quiet splash vt.handoff=7
Code:
gautam@gautam-laptop:~$ for i in /sys/class/backlight/*; do echo $i; cat $i/brightness; cat $i/max_brightness; done
/sys/class/backlight/acpi_video0
5
15
Code:
gautam@gautam-laptop:~$ sudo dmidecode -s system-manufacturer
[sudo] password for gautam:
Sony Corporation
Code:
gautam@gautam-laptop:~$ sudo dmidecode -s system-product-name
SVE14127CNW
Code:
gautam@gautam-laptop:~$ sudo lspci -vnn | grep -A12 VGA
01:00.0 VGA compatible controller [0300]: Advanced Micro Devices [AMD] nee ATI Thames [Radeon 7500M/7600M Series] [1002:6841] (prog-if 00 [VGA controller])
Subsystem: Sony Corporation Device [104d:90aa]
Flags: bus master, fast devsel, latency 0, IRQ 45
Memory at e0000000 (64-bit, prefetchable) [size=256M]
Memory at f7e20000 (64-bit, non-prefetchable) [size=128K]
I/O ports at e000 [size=256]
Expansion ROM at f7e00000 [disabled] [size=128K]
Capabilities: [50] Power Management version 3
Capabilities: [58] Express Legacy Endpoint, MSI 00
Capabilities: [a0] MSI: Enable+ Count=1/1 Maskable- 64bit+
Capabilities: [100] Vendor Specific Information: ID=0001 Rev=1 Len=010 <?>
Capabilities: [150] Advanced Error Reporting
Kernel driver in use: radeon
Code:
gautam@gautam-laptop:~$ echo 15 | sudo tee /sys/class/backlight/acpi_video0/brightness
15
Code:
gautam@gautam-laptop:~$ echo 5 | sudo tee /sys/class/backlight/acpi_video0/brightness
5
Code:
gautam@gautam-laptop:~$ acpi_listen
video LCD 00000087 00000000
video VGA 00000081 00000000
video VGA 00000081 00000000
video LCD 00000087 00000000
video VGA 00000081 00000000
video VGA 00000081 00000000
Bookmarks