Arch Linux

denis4inet

Member

Registered: 2014-03-09

Posts: 1

Disabling hybrid descrete Radeon HD 8670A gpu

Hi there!
I have Dell Inspiron 3537 with

$ lspci
03:00.0 Display controller: Advanced Micro Devices, Inc. [AMD/ATI] Sun XT [Radeon HD 8670A]

on board.

So, I want to disable\power off discrete gpu (ATI RADEON), but due to wirki I can't.
I  have tried via acpi_call and via debugfs vgaswitcheroo.

turn_off_gpu.sh
Trying \_SB.PCI0.P0P1.VGA._OFF: failed
Trying \_SB.PCI0.P0P2.VGA._OFF: failed
Trying \_SB_.PCI0.OVGA.ATPX: failed
Trying \_SB_.PCI0.OVGA.XTPX: failed
Trying \_SB.PCI0.P0P3.PEGP._OFF: failed
Trying \_SB.PCI0.P0P2.PEGP._OFF: failed
Trying \_SB.PCI0.P0P1.PEGP._OFF: failed
Trying \_SB.PCI0.MXR0.MXM0._OFF: failed
Trying \_SB.PCI0.PEG1.GFX0._OFF: failed
Trying \_SB.PCI0.PEG0.GFX0.DOFF: failed
Trying \_SB.PCI0.PEG1.GFX0.DOFF: failed
Trying \_SB.PCI0.PEG0.PEGP._OFF: failed
Trying \_SB.PCI0.XVR0.Z01I.DGOF: failed
Trying \_SB.PCI0.PEGR.GFX0._OFF: failed
Trying \_SB.PCI0.PEG.VID._OFF: failed
Trying \_SB.PCI0.PEG0.VID._OFF: failed
Trying \_SB.PCI0.P0P2.DGPU._OFF: failed
Trying \_SB.PCI0.P0P4.DGPU.DOFF: failed
Trying \_SB.PCI0.IXVE.IGPU.DGOF: failed
Trying \_SB.PCI0.RP00.VGA._PS3: failed
Trying \_SB.PCI0.RP00.VGA.P3MO: failed
Trying \_SB.PCI0.GFX0.DSM._T_0: failed
Trying \_SB.PCI0.LPC.EC.PUBS._OFF: failed
Trying \_SB.PCI0.P0P2.NVID._OFF: failed
Trying \_SB.PCI0.P0P2.VGA.PX02: failed
Trying \_SB_.PCI0.PEGP.DGFX._OFF: failed
Trying \_SB_.PCI0.VGA.PX02: failed
Trying \_SB.PCI0.PEG0.PEGP.SGOF: failed
Trying \_SB.PCI0.AGP.VGA.PX02: failed

and vgaswitcheroo has not appeared in debugfs:

# echo OFF > /sys/kernel/debug/vgaswitcheroo/switch
zsh: no such file or directory: /sys/kernel/debug/vgaswitcheroo/switch
# ls /sys/kernel/debug/vgaswitcheroo/switch                                                                                         ⏎
ls: cannot access /sys/kernel/debug/vgaswitcheroo/switch: No such file or directory

$ cat /proc/cmdline 
BOOT_IMAGE=/vmlinuz-linux modeset=1 root=LABEL=laptop-archlinux rw quiet acpi_osi=Linux acpi_backlight=vendor resume=LABEL=laptop-swap
$ uanme
Linux dl 3.13.5-1-ARCH

Thanks in advance.

Last edited by denis4inet (2014-03-09 16:41:22)