https://bugs.freedesktop.org/show_bug.cgi?id=102053
--- Comment #2 from Luya Tshimbalanga luya@fedoraproject.org --- Created attachment 133275 --> https://bugs.freedesktop.org/attachment.cgi?id=133275&action=edit Complete dmesg info from X550ZE laptop
Here is partial info from dmesg with amdgpu enabled for the SI card:
dmesg | grep amdgpu [ 0.000000] Command line: BOOT_IMAGE=/vmlinuz-4.11.12-20170727.amdmainhyb.fc26.x86_64 root=UUID=232c0ccf-375a-4e4d-a080-9986ea920e1c ro rhgb quiet resume=/dev/sda9 LANG=en_CA.UTF-8 amdgpu.si_support=1 radeon.si_support=0 [ 0.000000] Kernel command line: BOOT_IMAGE=/vmlinuz-4.11.12-20170727.amdmainhyb.fc26.x86_64 root=UUID=232c0ccf-375a-4e4d-a080-9986ea920e1c ro rhgb quiet resume=/dev/sda9 LANG=en_CA.UTF-8 amdgpu.si_support=1 radeon.si_support=0 [ 3.387717] radeon 0000:00:01.0: CIK support provided by amdgpu. [ 3.387718] radeon 0000:00:01.0: Use radeon.cik_support=1 amdgpu.cik_support=0 to override. [ 3.546929] [drm] amdgpu kernel modesetting enabled. [ 3.548179] amdgpu 0000:00:01.0: VRAM: 1024M 0x000000F400000000 - 0x000000F43FFFFFFF (1024M used) [ 3.548181] amdgpu 0000:00:01.0: GTT: 256M 0x0000000000000000 - 0x000000000FFFFFFF [ 3.548396] [drm] amdgpu: 1024M of VRAM memory ready [ 3.548397] [drm] amdgpu: 3072M of GTT memory ready. [ 3.548500] amdgpu 0000:00:01.0: amdgpu: using MSI. [ 3.548522] [drm] amdgpu: irq initialized. [ 3.548531] [drm] amdgpu: dpm initialized [ 3.549146] [drm] amdgpu atom DIG backlight initialized [ 3.549429] amdgpu 0000:00:01.0: fence driver on ring 0 use gpu addr 0x0000000000400010, cpu addr 0xffff918e380ed010 [ 3.549522] amdgpu 0000:00:01.0: fence driver on ring 1 use gpu addr 0x0000000000400020, cpu addr 0xffff918e380ed020 [ 3.549604] amdgpu 0000:00:01.0: fence driver on ring 2 use gpu addr 0x0000000000400030, cpu addr 0xffff918e380ed030 [ 3.549660] amdgpu 0000:00:01.0: fence driver on ring 3 use gpu addr 0x0000000000400040, cpu addr 0xffff918e380ed040 [ 3.549740] amdgpu 0000:00:01.0: fence driver on ring 4 use gpu addr 0x0000000000400050, cpu addr 0xffff918e380ed050 [ 3.549781] amdgpu 0000:00:01.0: fence driver on ring 5 use gpu addr 0x0000000000400060, cpu addr 0xffff918e380ed060 [ 3.549826] amdgpu 0000:00:01.0: fence driver on ring 6 use gpu addr 0x0000000000400070, cpu addr 0xffff918e380ed070 [ 3.549864] amdgpu 0000:00:01.0: fence driver on ring 7 use gpu addr 0x0000000000400080, cpu addr 0xffff918e380ed080 [ 3.549903] amdgpu 0000:00:01.0: fence driver on ring 8 use gpu addr 0x0000000000400090, cpu addr 0xffff918e380ed090 [ 3.550003] amdgpu 0000:00:01.0: fence driver on ring 9 use gpu addr 0x00000000004000a0, cpu addr 0xffff918e380ed0a0 [ 3.550047] amdgpu 0000:00:01.0: fence driver on ring 10 use gpu addr 0x00000000004000b0, cpu addr 0xffff918e380ed0b0 [ 3.550393] amdgpu 0000:00:01.0: fence driver on ring 11 use gpu addr 0x000000f40010cd30, cpu addr 0xffff9edf42a38d30 [ 3.550533] amdgpu 0000:00:01.0: fence driver on ring 12 use gpu addr 0x00000000004000d0, cpu addr 0xffff918e380ed0d0 [ 3.550579] amdgpu 0000:00:01.0: fence driver on ring 13 use gpu addr 0x00000000004000e0, cpu addr 0xffff918e380ed0e0 [ 4.653332] fbcon: amdgpudrmfb (fb0) is primary device [ 8.243667] amdgpu 0000:00:01.0: fb0: amdgpudrmfb frame buffer device [ 8.255318] [drm] Initialized amdgpu 3.18.0 20150101 for 0000:00:01.0 on minor 0 [ 8.303431] amdgpu 0000:01:00.0: VRAM: 2048M 0x000000F400000000 - 0x000000F47FFFFFFF (2048M used) [ 8.303433] amdgpu 0000:01:00.0: GTT: 256M 0x0000000000000000 - 0x000000000FFFFFFF [ 8.303463] [drm] amdgpu: 2048M of VRAM memory ready [ 8.303464] [drm] amdgpu: 3072M of GTT memory ready. [ 8.303844] amdgpu 0000:01:00.0: PCIE GART of 256M enabled (table at 0x000000F400040000). [ 8.303912] amdgpu 0000:01:00.0: amdgpu: using MSI. [ 8.303936] [drm] amdgpu: irq initialized. [ 8.304054] [drm] amdgpu: dpm initialized [ 8.306354] amdgpu 0000:01:00.0: fence driver on ring 0 use gpu addr 0x0000000000400010, cpu addr 0xffff918e377c7010 [ 8.306411] amdgpu 0000:01:00.0: fence driver on ring 1 use gpu addr 0x0000000000400020, cpu addr 0xffff918e377c7020 [ 8.306483] amdgpu 0000:01:00.0: fence driver on ring 2 use gpu addr 0x0000000000400030, cpu addr 0xffff918e377c7030 [ 8.306612] amdgpu 0000:01:00.0: fence driver on ring 3 use gpu addr 0x0000000000400040, cpu addr 0xffff918e377c7040 [ 8.306660] amdgpu 0000:01:00.0: fence driver on ring 4 use gpu addr 0x0000000000400050, cpu addr 0xffff918e377c7050 [ 8.307009] [drm] enabling PCIE gen 3 link speeds, disable with amdgpu.pcie_gen2=0 [ 9.881866] [drm] Initialized amdgpu 3.18.0 20150101 for 0000:01:00.0 on minor 1 [ 24.950246] audit: type=1130 audit(1502081854.489:64): pid=1 uid=0 auid=4294967295 ses=4294967295 subj=system_u:system_r:init_t:s0 msg='unit=systemd-backlight@backlight:amdgpu_bl0 comm="systemd" exe="/usr/lib/systemd/systemd" hostname=? addr=? terminal=? res=success' [ 252.329372] [drm] enabling PCIE gen 3 link speeds, disable with amdgpu.pcie_gen2=0 [ 253.697379] amdgpu 0000:01:00.0: PCIE GART of 256M enabled (table at 0x000000F400040000).
Result with disabled radeon driver: dmesg | grep radeon [ 0.000000] Command line: BOOT_IMAGE=/vmlinuz-4.11.12-20170727.amdmainhyb.fc26.x86_64 root=UUID=232c0ccf-375a-4e4d-a080-9986ea920e1c ro rhgb quiet resume=/dev/sda9 LANG=en_CA.UTF-8 amdgpu.si_support=1 radeon.si_support=0 [ 0.000000] Kernel command line: BOOT_IMAGE=/vmlinuz-4.11.12-20170727.amdmainhyb.fc26.x86_64 root=UUID=232c0ccf-375a-4e4d-a080-9986ea920e1c ro rhgb quiet resume=/dev/sda9 LANG=en_CA.UTF-8 amdgpu.si_support=1 radeon.si_support=0 [ 3.362853] [drm] radeon kernel modesetting enabled. [ 3.386972] fb: switching to radeondrmfb from EFI VGA [ 3.387717] radeon 0000:00:01.0: CIK support provided by amdgpu. [ 3.387718] radeon 0000:00:01.0: Use radeon.cik_support=1 amdgpu.cik_support=0 to override. [ 3.387955] radeon 0000:01:00.0: enabling device (0000 -> 0003) [ 3.388092] radeon 0000:01:00.0: SI support disabled by module param
Having learning about the RAM, it is a 64bit dmesg | grep RAM [ 0.000000] e820: BIOS-provided physical RAM map: [ 0.000000] extended physical RAM map: [ 0.000000] RAMDISK: [mem 0x3d108000-0x3e918fff] [ 0.296648] e820: reserve RAM buffer [mem 0x4faec018-0x4fffffff] [ 0.296650] e820: reserve RAM buffer [mem 0x4faf4018-0x4fffffff] [ 0.296651] e820: reserve RAM buffer [mem 0x6d6ac000-0x6fffffff] [ 0.296652] e820: reserve RAM buffer [mem 0x6e659000-0x6fffffff] [ 0.296653] e820: reserve RAM buffer [mem 0x6ec8b000-0x6fffffff] [ 0.296653] e820: reserve RAM buffer [mem 0x6f000000-0x6fffffff] [ 0.296654] e820: reserve RAM buffer [mem 0x44f000000-0x44fffffff] [ 2.958862] systemd[1]: Running in initial RAM disk. [ 3.548179] amdgpu 0000:00:01.0: VRAM: 1024M 0x000000F400000000 - 0x000000F43FFFFFFF (1024M used) [ 3.548185] [drm] Detected VRAM RAM=1024M, BAR=1024M [ 3.548187] [drm] RAM width 128bits UNKNOWN [ 3.548396] [drm] amdgpu: 1024M of VRAM memory ready [ 8.303431] amdgpu 0000:01:00.0: VRAM: 2048M 0x000000F400000000 - 0x000000F47FFFFFFF (2048M used) [ 8.303444] [drm] Detected VRAM RAM=2048M, BAR=256M [ 8.303445] [drm] RAM width 64bits DDR3 [ 8.303463] [drm] amdgpu: 2048M of VRAM memory ready [ 26.343910] EDAC amd64: Node 0: DRAM ECC disabled. [ 26.373034] EDAC amd64: Node 0: DRAM ECC disabled. [ 26.403924] EDAC amd64: Node 0: DRAM ECC disabled.