Arch Linux

primotivo

Member

Registered: 2015-01-01

Posts: 4

ACPI issues... I think

I'm new to Arch so bear with me. I have a couple symptoms that I think are related:
1) unable to adjust screen brightness with xbacklight
2) neither shutdown or poweroff completely turn off my laptop

I'm on an Acer Aspire V5-122P
Minimal install w/ Awesome WM and not much else
Some errors from journalctl -b:

Jan 01 10:11:50 aspire kernel: [drm] Initialized drm 1.1.0 20060810
Jan 01 10:11:50 aspire kernel: ACPI Warning: SystemIO range 0x0000000000000b00-0x0000000000000b07 conflicts with OpRegion 0x0000000000000b00-0x0000000000000b0f (\_SB_.PCI0.SMBS.SMB0) (20140724/utaddress-258)
Jan 01 10:11:50 aspire kernel: ACPI: If an ACPI driver is available for this device, you should use it instead of the native drive

Jan 01 10:11:52 aspire kernel: acer_wmi: Brightness must be controlled by acpi video driver
Jan 01 10:11:52 aspire kernel: acer_wmi: Enabling Launch Manager failed: 0xe2 - 0x0

Jan 01 10:11:54 aspire systemd[1]: Starting Load/Save Screen Backlight Brightness of backlight:radeon_bl0...
Jan 01 10:11:54 aspire systemd[1]: Starting Load/Save Screen Backlight Brightness of backlight:acpi_video0...
Jan 01 10:11:54 aspire systemd-backlight[244]: Failed to get backlight or LED device 'backlight:acpi_video0': No such file or directory
Jan 01 10:11:54 aspire systemd[1]: systemd-backlight@backlight:acpi_video0.service: main process exited, code=exited, status=1/FAILURE
Jan 01 10:11:54 aspire systemd[1]: Failed to start Load/Save Screen Backlight Brightness of backlight:acpi_video0.
Jan 01 10:11:54 aspire systemd[1]: Unit systemd-backlight@backlight:acpi_video0.service entered failed state.
Jan 01 10:11:54 aspire systemd[1]: systemd-backlight@backlight:acpi_video0.service failed.

Any help or even a point in the right direction would be appreciated. Thanks!

Raynman

Member

Registered: 2011-10-22

Posts: 1,539

Re: ACPI issues... I think

Why do you think those symptoms are related?

If you are using the radeon driver (you didn't mention this, but I see radeon_bl0) xbacklight won't work because that driver doesn't support the RandR backlight property (and the devs didn't intend to fix that, so I doubt this has changed since the last time I checked).

primotivo

Member

Registered: 2015-01-01

Posts: 4

Re: ACPI issues... I think

Why do you think those symptoms are related?

If you are using the radeon driver (you didn't mention this, but I see radeon_bl0) xbacklight won't work because that driver doesn't support the RandR backlight property (and the devs didn't intend to fix that, so I doubt this has changed since the last time I checked).

Thanks for the info. I read somwhere the power prob is an acpi thing too so I assumed.

...and yes I'm using the radeon driver. I was under the impression the fglrx driver is a pain. Guess I'll give it a shot. Thanks again

primotivo

Member

Registered: 2015-01-01

Posts: 4

Re: ACPI issues... I think

After installing the proprietary driver the first error still exists and I think this one is new:

Jan 03 11:38:43 aspire kernel: ACPI Error: Method parse/execution failed [\_SB_.PCI0.VGA_.AF03] (Node 
ffff88011a851898), AE_AML_INFINITE_LOOP (20140724/psparse-536)
Jan 03 11:38:43 aspire kernel: ACPI Error: Method parse/execution failed [\_SB_.PCI0.VGA_.ATIF] (Node 
ffff88011a851690), AE_AML_INFINITE_LOOP (20140724/psparse-536)

xbacklight doesn't give an error but it doesn't have any effect on the brightness. When using the multimedia keys my screen will toggle on and off but brightness remains the same. I've tried a few kernel parameters and the aticonfig setting on the arch wiki as well. Neither has any effect.

Ideas?