Como faço para voltar para Ati depois de mudar para Intel no Linux Switchable?

Como faço para voltar para Ati depois de mudar para Intel no Linux Switchable?

Eu tenho um laptop com combinação Ati/Intel. Estou usando o driver Amd no Debian Jessie 64. Consegui usar o driver Ati com ele por um tempo. Então decidi voltar para a placa Intel usando o painel de controle Ati/Amd para fins de bateria. Porém agora tenho um dilema. Fglrxinfo está me dando falha de seg e amdccle está me dando

amdcccle 

(process:12129): GConf-WARNING **: Client failed to connect to the D-BUS daemon:
Did not receive a reply. Possible causes include: the remote application did not send a reply, the message bus security policy blocked the reply, the reply timeout expired, or the network connection was broken.
Qt: Session management error: Authentication Rejected, reason : None of the authentication protocols specified are supported and host-based authentication failed
Segmentation fault

Presumo que agora pense que este pc não tem mais placa AMD.

aticonfig --px-dgpu
aticonfig: No supported adapters detected

Como faço para voltar ao driver Ati? Não consigo encontrar um caminho. Idealmente, eu gostaria de poder simplesmente alternar sem complicações. Isso é simplesmente triste.

3.12-1-amd64

lspci |grep -i vga (as you see the ati is not even listed here, but it is in the laptop)
00:02.0 VGA compatible controller: Intel Corporation 2nd Generation Core Processor Family Integrated Graphics Controller (rev 09)

algum dmesg

 5.014790] Console: switching to colour frame buffer device 240x67
[    5.024249] i915 0000:00:02.0: fb0: inteldrmfb frame buffer device
[    5.024252] i915 0000:00:02.0: registered panic notifier
[    5.024572] [Firmware Bug]: ACPI(PEGP) defines _DOD but not _DOS
[    5.025182] ACPI: Video Device [PEGP] (multi-head: yes  rom: no  post: no)
[    5.025264] input: Video Bus as /devices/LNXSYSTM:00/device:00/PNP0A08:00/device:27/LNXVIDEO:00/input/input9
[    5.025484] [Firmware Bug]: Duplicate ACPI video bus devices for the same VGA controller, please try module parameter "video.allow_duplicates=1"if the current driver doesn't work.
[    5.025496] [Firmware Bug]: Duplicate ACPI video bus devices for the same VGA controller, please try module parameter "video.allow_duplicates=1"if the current driver doesn't work.
[    5.025505] [Firmware Bug]: Duplicate ACPI video bus devices for the same VGA controller, please try module parameter "video.allow_duplicates=1"if the current driver doesn't work.
[    5.025516] [Firmware Bug]: Duplicate ACPI video bus devices for the same VGA controller, please try module parameter "video.allow_duplicates=1"if the current driver doesn't work.
[    5.025526] [Firmware Bug]: Duplicate ACPI video bus devices for the same VGA controller, please try module parameter "video.allow_duplicates=1"if the current driver doesn't work.
[    5.025535] [Firmware Bug]: Duplicate ACPI video bus devices for the same VGA controller, please try module parameter "video.allow_duplicates=1"if the current driver doesn't work.
[    5.025545] [Firmware Bug]: Duplicate ACPI video bus devices for the same VGA controller, please try module parameter "video.allow_duplicates=1"if the current driver doesn't work.
[    5.026199] ACPI: Video Device [GFX0] (multi-head: yes  rom: no  post: no)
[    5.026263] input: Video Bus as /devices/LNXSYSTM:00/device:00/PNP0A08:00/LNXVIDEO:09/input/input10
[    5.026386] [drm] Initialized i915 1.6.0 20080730 for 0000:00:02.0 on minor 0
[    5.026648] snd_hda_intel 0000:00:1b.0: irq 52 for MSI/MSI-X
[    5.039329] hda_codec: ALC275: SKU not ready 0x411111f0
[    5.041625] input: HDA Digital PCBeep as /devices/pci0000:00/0000:00:1b.0/input/input11
[    5.047535] input: HDA Intel PCH HDMI/DP,pcm=7 as /devices/pci0000:00/0000:00:1b.0/sound/card0/input14
[    5.047618] input: HDA Intel PCH HDMI/DP,pcm=3 as /devices/pci0000:00/0000:00:1b.0/sound/card0/input13
[    5.047684] input: HDA Intel PCH Headphone as /devices/pci0000:00/0000:00:1b.0/sound/card0/input12
[    5.805203] [drm] Enabling RC6 states: RC6 on, RC6p off, RC6pp off
[    5.980909] EXT4-fs (sda4): re-mounted. Opts: (null)
[    6.141661] EXT4-fs (sda4): re-mounted. Opts: errors=remount-ro
[    6.375841] loop: module loaded
[    6.402569] fuse init (API version 7.22)
[    6.829082] tusbd: disagrees about version of symbol module_layout

134.039852] fglrx_pci 0000:01:00.0: irq 53 for MSI/MSI-X
[  134.040322] <6>[fglrx] Firegl kernel thread PID: 5920
[  134.040432] <6>[fglrx] Firegl kernel thread PID: 5921
[  134.040556] <6>[fglrx] Firegl kernel thread PID: 5922
[  134.040661] <6>[fglrx] IRQ 53 Enabled
[  134.087922] <6>[fglrx] Reserved FB block: Shared offset:0, size:1000000 
[  134.087925] <6>[fglrx] Reserved FB block: Unshared offset:f878000, size:4000 
[  134.087926] <6>[fglrx] Reserved FB block: Unshared offset:f87c000, size:484000 
[  134.087927] <6>[fglrx] Reserved FB block: Unshared offset:1fff4000, size:c000 
[  304.908413] <6>[fglrx] IRQ 53 Disabled
[  305.012089] vgaarb: device changed decodes: PCI:0000:00:02.0,olddecodes=none,decodes=io+mem:owns=none
[  305.016699] <6>[fglrx] module unloaded - fglrx 13.25.5 [Dec  6 2013]
[  305.018252] vgaarb: invalid PCI address 0:1:0
[  324.933530] amdcccle[8124]: segfault at c ip 00007f43e380f0a0 sp 00007fff598a6908 error 4 in libxcb-glx.so.0.0.0[7f43e3804000+15000]
[  359.901130] fgl_glxgears[8364]: segfault at c ip 00007f33880560a0 sp 00007fffc61a2fa8 error 4 in libxcb-glx.so.0.0.0[7f338804b000+15000]
[  370.023260] fglrxinfo[8431]: segfault at c ip 00007fc671cfa0a0 sp 00007fff936d8b78 error 4 in libxcb-glx.so.0.0.0[7fc671cef000+15000]
[  384.532181] amdcccle[8531]: segfault at c ip 00007fbeaf9bd0a0 sp 00007fffab4b30e8 error 4 in libxcb-glx.so.0.0.0[7fbeaf9b2000+15000]

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