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Old 12-06-2017, 05:42 AM   #1
Registered: Oct 2012
Location: Romania
Distribution: Slackware
Posts: 110

Rep: Reputation: Disabled
Dsiaply problems on a Lenovo V510 laptop

I've managed to install Slackware64-14.2 on a Lenovo V510 with the following hardware:
  • CPU: Intel i7-7500U
  • VGA Intel (device id 5916)
  • Display: AMD Topaz XT (Radeon R7 M260/265)

On this model, Windows would identify the display as:
  • Intel Graphics 620
  • AMD Radeon R7 M340

At first glance, the console display doesn't automatically switch to framebuffer during kernel initialization.
Second, X won't work.

drm, i915,drm_kms_helper,amd_iommu_v2,amdkfd,amdgpu modules are loaded (lsmod)

In dmesg I see this information which might be relevant, the rest I can't say:
vgaarb: setting as boot device: PIC:0000:00:02.0
vgaarb: loaded
Linux agpgart interface v0.103
[drm] initialized drm 1.1.0 20060810
[drm] amdgpu kernel modesetting enabled.
vga_switcheroo: detected switching method \_SB_.PCI0.GFX0.ATPX handle
AMD IOMMUv2 driver by Joerg Redel
AMD IOMMUv2 functionality not available on this system
CRAT table not found
kfd kfd: initialized module
[drm] initializing kernel modesetting (TOPAZ 0x1002:0x6900 0x17AA:0x39F0 0x83)
[drm] register mmio base: 0xD2200000
[drm] register mmio size: 262144
[drm] doorbell mmio base: 0xD0000000
[drm] doorbell mmio size: 2097152
[drm] GPU not posted. posting now...
[drm] Changing default dispclk from 0Mhz to 600Mhz
amdgpu 0000:01:00.0: VRAM 2048M
amdgpu 0000:01:00.0: GTT: 2048M
[drm] Detected VRAM RAM=2048M, BAR=256M
[drm] RAM width 64bits DDR
[TTM] Zone kernel: Available graphics memory: 3934476kiB
[TTM] Zone dma32: Available graphics memory: 2097152kiB
[TTM] Initializing pool allocator
[TTM] Initializing DMA pool allocator
[drm] amdgpu: 2048M of VRAM memory ready
[drm] amdgpu: 2048M of GTT memory ready
[drm] GART: num cpu pages 524288, num gpu pages 251288
[drm] PCIE GART of 2048M enabled
[drm] Supports vblank timestamp caching Rev 2
[drm] Driver supports precise vblank timestamp query
amdgpu 0000:01:00.0: amdgpu using MSI
[drm] amdgpu: irq initialized
amdgpu 0000:01:00.0: fence driver on ring 0 .. 10 
[drm] probing gen 2 caps for device 8086:9d10 = 1724043/e
[drm] ring test on 0 succeeded in 15 usecs
[drm] initialized amdgpu 3.1.0 20150101 for 0000:01:00.0 on minor 0
I ran xorgsetup, which did it's job properly, however startx fails.

xorg.conf lists only single device as
Driver "intel"
BusID "PCI:0:2:0"

in Xorg.0.log:
(II) LoadModule: "intel"
(EE) No devices detected

Last edited by andrixnet; 12-06-2017 at 05:49 AM.
Old 12-06-2017, 05:46 AM   #2
Registered: Oct 2012
Location: Romania
Distribution: Slackware
Posts: 110

Original Poster
Rep: Reputation: Disabled
X will work with vesa driver when associated with BusID: 00:02.0 (VGA intel) if I manually edit xorg.conf.

However, neither intel, nor radeon drivers will work, nor the framebuffer console.


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