Eu vi o mesmo problema antes da versão 3.19 , não lembro desde quando, mas parece desaparecer na versão 3.19 .
Mas quando eu compilar a versão 4.1.6 usando 3.19 config, o problema voltou.
Aqui está a saída de dmesg :
[ 0.332130] [drm] Initialized drm 1.1.0 20060810
[ 0.334342] [drm] radeon kernel modesetting enabled.
[ 0.336556] fb: switching to radeondrmfb from EFI VGA
[ 0.340578] [drm] initializing kernel modesetting (PALM 0x1002:0x9802 0x10CF:0x1679).
[ 0.340724] [drm] register mmio base: 0xD1100000
[ 0.340732] [drm] register mmio size: 262144
[ 0.340934] [drm] Detected VRAM RAM=384M, BAR=256M
[ 0.340941] [drm] RAM width 32bits DDR
[ 0.341202] [drm] radeon: 384M of VRAM memory ready
[ 0.341210] [drm] radeon: 1024M of GTT memory ready.
[ 0.341247] [drm] Loading PALM Microcode
[ 0.341261] [drm] Internal thermal controller without fan control
[ 0.341339] [drm] Found smc ucode version: 0x00010200
[ 0.341567] [drm] radeon: dpm initialized
[ 0.341716] [drm] GART: num cpu pages 262144, num gpu pages 262144
[ 0.353313] [drm] PCIE GART of 1024M enabled (table at 0x0000000000274000).
[ 0.354488] [drm] Supports vblank timestamp caching Rev 2 (21.10.2013).
[ 0.354495] [drm] Driver supports precise vblank timestamp query.
[ 0.354680] [drm] radeon: irq initialized.
[ 0.372169] [drm] ring test on 0 succeeded in 1 usecs
[ 0.372195] [drm] ring test on 3 succeeded in 2 usecs
[ 1.418089] [drm:uvd_v1_0_start] *ERROR* UVD not responding, trying to reset the VCPU!!!
[ 2.437896] [drm:uvd_v1_0_start] *ERROR* UVD not responding, trying to reset the VCPU!!!
[ 3.457637] [drm:uvd_v1_0_start] *ERROR* UVD not responding, trying to reset the VCPU!!!
[ 4.477512] [drm:uvd_v1_0_start] *ERROR* UVD not responding, trying to reset the VCPU!!!
[ 5.497297] [drm:uvd_v1_0_start] *ERROR* UVD not responding, trying to reset the VCPU!!!
[ 6.517037] [drm:uvd_v1_0_start] *ERROR* UVD not responding, trying to reset the VCPU!!!
[ 7.536914] [drm:uvd_v1_0_start] *ERROR* UVD not responding, trying to reset the VCPU!!!
[ 8.556654] [drm:uvd_v1_0_start] *ERROR* UVD not responding, trying to reset the VCPU!!!
[ 9.576469] [drm:uvd_v1_0_start] *ERROR* UVD not responding, trying to reset the VCPU!!!
[ 10.596278] [drm:uvd_v1_0_start] *ERROR* UVD not responding, trying to reset the VCPU!!!
[ 10.616285] [drm:uvd_v1_0_start] *ERROR* UVD not responding, giving up!!!
[ 10.636465] [drm:evergreen_startup] *ERROR* radeon: error initializing UVD (-1).
[ 10.637520] [drm] ib test on ring 0 succeeded in 0 usecs
[ 10.637574] [drm] ib test on ring 3 succeeded in 0 usecs
[ 10.691957] [drm] radeon atom DIG backlight initialized
[ 10.691979] [drm] Radeon Display Connectors
[ 10.691987] [drm] Connector 0:
[ 10.691994] [drm] LVDS-1
[ 10.692001] [drm] HPD1
[ 10.692009] [drm] DDC: 0x6430 0x6430 0x6434 0x6434 0x6438 0x6438 0x643c 0x643c
[ 10.692020] [drm] Encoders:
[ 10.692026] [drm] LCD1: INTERNAL_UNIPHY
[ 10.692033] [drm] Connector 1:
[ 10.692039] [drm] HDMI-A-1
[ 10.692045] [drm] HPD2
[ 10.692052] [drm] DDC: 0x6440 0x6440 0x6444 0x6444 0x6448 0x6448 0x644c 0x644c
[ 10.692062] [drm] Encoders:
[ 10.692068] [drm] DFP1: INTERNAL_UNIPHY
[ 10.692074] [drm] Connector 2:
[ 10.692080] [drm] VGA-1
[ 10.692088] [drm] DDC: 0x64d8 0x64d8 0x64dc 0x64dc 0x64e0 0x64e0 0x64e4 0x64e4
[ 10.692098] [drm] Encoders:
[ 10.692104] [drm] CRT1: INTERNAL_KLDSCP_DAC1
[ 11.109655] [drm] fb mappable at 0xC0478000
[ 11.109673] [drm] vram apper at 0xC0000000
[ 11.109680] [drm] size 4325376
[ 11.109687] [drm] fb depth is 24
[ 11.109693] [drm] pitch is 5632
[ 11.110159] fbcon: radeondrmfb (fb0) is primary device
[ 11.678885] radeon 0000:00:01.0: fb0: radeondrmfb frame buffer device
[ 11.684179] [drm] Initialized radeon 2.42.0 20080528 for 0000:00:01.0 on minor 0
Pode não prejudicar nada, mas eu tenho tela branca por pelo menos 2 segundos na inicialização, então é muito chato para mim.
Estou usando a Radeon HD 6310 no AMD Vision Fujitsu Lifebook.
Alguém sabe como resolver esse problema?