Estou executando o Ubuntu 16.04 com o Windows 7 em um HP Pavilion 15 n004TX com gráficos híbridos, sendo o AMD dedicado um chip da série Radeon HD 8600M. Eu segui este guia para tentar mudar para os gráficos integrados da AMD. Mais precisamente, aqui está o que eu fiz:
modprobe radeon.modeset=1 ao campo GRUB_CMDLINE_LINUX_DEFAULT . sudo update-grub . sudo bash para usar o bash como root. echo DDIS > /sys/kernel/debug/vgaswitcheroo/switch
Quando faço logout, a tela fica completamente preta e fica preta indefinidamente.
Alguns registros e outras coisas que podem fornecer algumas informações:
dmesg | grep vga :
[ 0.353271] vgaarb: setting as boot device: PCI:0000:00:02.0
[ 0.353274] vgaarb: device added: PCI:0000:00:02.0,decodes=io+mem,owns=io+mem,locks=none
[ 0.353278] vgaarb: loaded
[ 0.353280] vgaarb: bridge control possible 0000:00:02.0
[ 1.404921] vga_switcheroo: detected switching method \_SB_.PCI0.GFX0.ATPX handle
[ 1.407099] vgaarb: device changed decodes: PCI:0000:00:02.0,olddecodes=io+mem,decodes=io+mem:owns=io+mem
[ 1.443796] vga_switcheroo: enabled
dmesg | grep radeon
[ 0.000000] Command line: BOOT_IMAGE=/boot/vmlinuz-4.4.0-83-generic root=UUID=36fda289-737c-4df7-a5d3-31cdb1af29fe ro quiet splash modprobe radeon.modeset=1 vt.handoff=7
[ 0.000000] Kernel command line: BOOT_IMAGE=/boot/vmlinuz-4.4.0-83-generic root=UUID=36fda289-737c-4df7-a5d3-31cdb1af29fe ro quiet splash modprobe radeon.modeset=1 vt.handoff=7
[ 1.404905] [drm] radeon kernel modesetting enabled.
[ 1.413192] radeon 0000:0a:00.0: enabling device (0006 -> 0007)
[ 1.448380] radeon 0000:0a:00.0: VRAM: 1024M 0x0000000000000000 - 0x000000003FFFFFFF (1024M used)
[ 1.448382] radeon 0000:0a:00.0: GTT: 2048M 0x0000000040000000 - 0x00000000BFFFFFFF
[ 1.448503] [drm] radeon: 1024M of VRAM memory ready
[ 1.448504] [drm] radeon: 2048M of GTT memory ready.
[ 1.456350] [drm] radeon: dpm initialized
[ 1.460830] radeon 0000:0a:00.0: WB enabled
[ 1.460832] radeon 0000:0a:00.0: fence driver on ring 0 use gpu addr 0x0000000040000c00 and cpu addr 0xffff8800349b0c00
[ 1.460834] radeon 0000:0a:00.0: fence driver on ring 1 use gpu addr 0x0000000040000c04 and cpu addr 0xffff8800349b0c04
[ 1.460835] radeon 0000:0a:00.0: fence driver on ring 2 use gpu addr 0x0000000040000c08 and cpu addr 0xffff8800349b0c08
[ 1.460837] radeon 0000:0a:00.0: fence driver on ring 3 use gpu addr 0x0000000040000c0c and cpu addr 0xffff8800349b0c0c
[ 1.460838] radeon 0000:0a:00.0: fence driver on ring 4 use gpu addr 0x0000000040000c10 and cpu addr 0xffff8800349b0c10
[ 1.460839] radeon 0000:0a:00.0: VCE init error (-22).
[ 1.460843] radeon 0000:0a:00.0: radeon: MSI limited to 32-bit
[ 1.460883] radeon 0000:0a:00.0: radeon: using MSI.
[ 1.460913] [drm] radeon: irq initialized.
[ 1.699412] [drm] Initialized radeon 2.43.0 20080528 for 0000:0a:00.0 on minor 1
[ 13.343929] radeon 0000:0a:00.0: WB enabled
[ 13.343933] radeon 0000:0a:00.0: fence driver on ring 0 use gpu addr 0x0000000040000c00 and cpu addr 0xffff8800349b0c00
[ 13.343934] radeon 0000:0a:00.0: fence driver on ring 1 use gpu addr 0x0000000040000c04 and cpu addr 0xffff8800349b0c04
[ 13.343936] radeon 0000:0a:00.0: fence driver on ring 2 use gpu addr 0x0000000040000c08 and cpu addr 0xffff8800349b0c08
[ 13.343937] radeon 0000:0a:00.0: fence driver on ring 3 use gpu addr 0x0000000040000c0c and cpu addr 0xffff8800349b0c0c
[ 13.343939] radeon 0000:0a:00.0: fence driver on ring 4 use gpu addr 0x0000000040000c10 and cpu addr 0xffff8800349b0c10
[ 13.343941] radeon 0000:0a:00.0: VCE init error (-22).
[ 37.170761] radeon 0000:0a:00.0: WB enabled
[ 37.170766] radeon 0000:0a:00.0: fence driver on ring 0 use gpu addr 0x0000000040000c00 and cpu addr 0xffff8800349b0c00
[ 37.170769] radeon 0000:0a:00.0: fence driver on ring 1 use gpu addr 0x0000000040000c04 and cpu addr 0xffff8800349b0c04
[ 37.170771] radeon 0000:0a:00.0: fence driver on ring 2 use gpu addr 0x0000000040000c08 and cpu addr 0xffff8800349b0c08
[ 37.170774] radeon 0000:0a:00.0: fence driver on ring 3 use gpu addr 0x0000000040000c0c and cpu addr 0xffff8800349b0c0c
[ 37.170776] radeon 0000:0a:00.0: fence driver on ring 4 use gpu addr 0x0000000040000c10 and cpu addr 0xffff8800349b0c10
[ 37.170779] radeon 0000:0a:00.0: VCE init error (-22).
lspci | grep Display
0a:00.0 Display controller: Advanced Micro Devices, Inc. [AMD/ATI] Sun XT [Radeon HD 8670A/8670M/8690M / R5 M330 / M430] (rev ff)
lspci | grep VGA
0a:00.0 Display controller: Advanced Micro Devices, Inc. [AMD/ATI] Sun XT [Radeon HD 8670A/8670M/8690M / R5 M330 / M430] (rev ff)
glxinfo | grep OpenGL
OpenGL vendor string: Intel Open Source Technology Center
OpenGL renderer string: Mesa DRI Intel(R) Haswell Mobile
OpenGL core profile version string: 3.3 (Core Profile) Mesa 11.2.0
OpenGL core profile shading language version string: 3.30
OpenGL core profile context flags: (none)
OpenGL core profile profile mask: core profile
OpenGL core profile extensions:
OpenGL version string: 3.0 Mesa 11.2.0
OpenGL shading language version string: 1.30
OpenGL context flags: (none)
OpenGL extensions:
OpenGL ES profile version string: OpenGL ES 3.0 Mesa 11.2.0
OpenGL ES profile shading language version string: OpenGL ES GLSL ES 3.00
OpenGL ES profile extensions:
Terei prazer em fornecer mais informações necessárias. Agradecemos antecipadamente por sua ajuda.