dimming on ubuntu

fear corcaigh

Every time I turn Ubuntu on after it has been suspended the screen is very dim.
I have created a script to run on start up sudo setpci -s 00:02.0 F4.B= ??, the ?? being a hex number between 00 anf ff to solve it on start up, but it reverts back to the very low dim when I turn on after it is suspended.

Its an Acer 5738z here is the lspci output

@Acer-5738:~$ sudo lspci
00:00.0 Host bridge: Intel Corporation Mobile 4 Series Chipset Memory Controller Hub (rev 09)
00:02.0 VGA compatible controller: Intel Corporation Mobile 4 Series Chipset Integrated Graphics Controller (rev 09)
00:02.1 Display controller: Intel Corporation Mobile 4 Series Chipset Integrated Graphics Controller (rev 09)
00:1a.0 USB controller: Intel Corporation 82801I (ICH9 Family) USB UHCI Controller #4 (rev 03)
00:1a.1 USB controller: Intel Corporation 82801I (ICH9 Family) USB UHCI Controller #5 (rev 03)
00:1a.7 USB controller: Intel Corporation 82801I (ICH9 Family) USB2 EHCI Controller #2 (rev 03)
00:1b.0 Audio device: Intel Corporation 82801I (ICH9 Family) HD Audio Controller (rev 03)
00:1c.0 PCI bridge: Intel Corporation 82801I (ICH9 Family) PCI Express Port 1 (rev 03)
00:1c.1 PCI bridge: Intel Corporation 82801I (ICH9 Family) PCI Express Port 2 (rev 03)
00:1c.2 PCI bridge: Intel Corporation 82801I (ICH9 Family) PCI Express Port 3 (rev 03)
00:1c.4 PCI bridge: Intel Corporation 82801I (ICH9 Family) PCI Express Port 5 (rev 03)
00:1d.0 USB controller: Intel Corporation 82801I (ICH9 Family) USB UHCI Controller #1 (rev 03)
00:1d.1 USB controller: Intel Corporation 82801I (ICH9 Family) USB UHCI Controller #2 (rev 03)
00:1d.2 USB controller: Intel Corporation 82801I (ICH9 Family) USB UHCI Controller #3 (rev 03)
00:1d.3 USB controller: Intel Corporation 82801I (ICH9 Family) USB UHCI Controller #6 (rev 03)
00:1d.7 USB controller: Intel Corporation 82801I (ICH9 Family) USB2 EHCI Controller #1 (rev 03)
00:1e.0 PCI bridge: Intel Corporation 82801 Mobile PCI Bridge (rev 93)
00:1f.0 ISA bridge: Intel Corporation ICH9M LPC Interface Controller (rev 03)
00:1f.2 IDE interface: Intel Corporation 82801IBM/IEM (ICH9M/ICH9M-E) 2 port SATA Controller [IDE mode] (rev 03)
00:1f.3 SMBus: Intel Corporation 82801I (ICH9 Family) SMBus Controller (rev 03)
00:1f.5 IDE interface: Intel Corporation 82801IBM/IEM (ICH9M/ICH9M-E) 2 port SATA Controller [IDE mode] (rev 03)
02:00.0 Ethernet controller: Broadcom Corporation NetLink BCM5784M Gigabit Ethernet PCIe (rev 10)
04:00.0 Network controller: Atheros Communications Inc. AR928X Wireless Network Adapter (PCI-Express) (rev 01)


any help would be greatly appreciated, I know I can just run this command in terminal every time I turn it back on but there must be an easier way. The GUI for the dimming isn't work at all. When I use the Fn key and the screen dimming arrows that doesn't work either.

syklops

What version of Ubuntu?

fear corcaigh

13:4 only happened after update lastweek

syklops

Thats been filed as a bug a few times. Are you using the mainline kernel?

fear corcaigh

I am only a newbie really, teaching myself for the last 6 months, not sure what kernel i am using,
uname -a output here

Linux Acer-5738 3.8.0-20-generic #31-Ubuntu SMP Mon May 6 17:03:18 UTC 2013 i686 i686 i686 GNU/Linux

would you recommend using mainline kernal

syklops

Going by this bug report, they suggested going with the mainline kernel which is 3.9, you have 3.8.

That advice seemed to work for that bug submitter.

fear corcaigh

This didn't solve the problem, can I put my command into a file that is executed when I wake the machine up after its suspended.

syklops

Yes, you can place it in /etc/pm/sleep.d and it will be executed on resume.

Wcool

This might also work for your laptop:

http://www.reddit.com/r/chrubuntu/comments/1crefd/how_to_get_shortcut_keys_to_work_on_chrubuntu/

It uses a program called xdotool, maybe you can run that at the right moment

fear corcaigh

Problem solved, thanks for the replies and help.

I installed mainline kernel, sudo apt-get update && sudo apt-get dist-upgrade.
Even using the Fn key and the arrow keys will adjust the brightness now.

Scruffles

fear corcaigh wrote: »

Problem solved, thanks for the replies and help.

I installed mainline kernel, sudo apt-get update && sudo apt-get dist-upgrade.
Even using the Fn key and the arrow keys will adjust the brightness now.

the function/fn key plus arrows is the standard increase/decrease brightness for acer laptops,am using a acer ferrari 200,with kali linux from a usb stick right now and have the latest ubuntu installed on the HDD in a true crypt partition but do think have got the same dim screen bug issue with ubuntu,pain in the backside sometimes as updating the distro or kernel can cause a failiure to boot if it doesnt agree with the current install.