https://bugzilla.kernel.org/show_bug.cgi?id=31682
Summary: Radeon console output very slow with kms Product: Drivers Version: 2.5 Kernel Version: 2.6.38 Platform: All OS/Version: Linux Tree: Mainline Status: NEW Severity: normal Priority: P1 Component: Video(DRI - non Intel) AssignedTo: drivers_video-dri@kernel-bugs.osdl.org ReportedBy: kurt@roeckx.be Regression: No
Hi,
When I try to use KMS, the console output is very slow. I've seen a lot of people complain about this, but I can't find any bug about this. It's not really usable when KMS is enabled.
If I disable KMS (and use radeonfb), things work normally.
It takes for instance about 1 second for me to just redraw the screen, while the same thing is _at least_ 10 times faster, probably more like 100, when KMS is disabled.
When booting with KMS enabled I get this in dmesg: Mar 21 19:07:50 intrepid kernel: [ 8.735138] [drm] Initialized drm 1.1.0 20060810 Mar 21 19:07:50 intrepid kernel: [ 8.887517] [drm] radeon kernel modesetting enabled. Mar 21 19:07:50 intrepid kernel: [ 8.887709] radeon 0000:01:00.0: PCI INT A -> GSI 16 (level, low) -> IRQ 16 Mar 21 19:07:50 intrepid kernel: [ 8.891920] [drm] initializing kernel modesetting (RV280 0x1002:0x5964). Mar 21 19:07:50 intrepid kernel: [ 8.892029] [drm] register mmio base: 0xFD400000 Mar 21 19:07:50 intrepid kernel: [ 8.892084] [drm] register mmio size: 65536 Mar 21 19:07:50 intrepid kernel: [ 8.896084] agpgart-amd64 0000:00:00.0: AGP 3.5 bridge Mar 21 19:07:50 intrepid kernel: [ 8.896339] agpgart-amd64 0000:00:00.0: putting AGP V3 device into 8x mode Mar 21 19:07:50 intrepid kernel: [ 8.896458] radeon 0000:01:00.0: putting AGP V3 device into 8x mode Mar 21 19:07:50 intrepid kernel: [ 8.896519] radeon 0000:01:00.0: GTT: 64M 0xF8000000 - 0xFBFFFFFF Mar 21 19:07:50 intrepid kernel: [ 8.896578] [drm] Generation 2 PCI interface, using max accessible memory Mar 21 19:07:50 intrepid kernel: [ 8.896638] radeon 0000:01:00.0: VRAM: 128M 0x00000000E8000000 - 0x00000000EFFFFFFF (128M used) Mar 21 19:07:50 intrepid kernel: [ 8.896714] [drm] Supports vblank timestamp caching Rev 1 (10.10.2010). Mar 21 19:07:50 intrepid kernel: [ 8.896772] [drm] Driver supports precise vblank timestamp query. Mar 21 19:07:50 intrepid kernel: [ 8.896866] [drm] radeon: irq initialized. Mar 21 19:07:50 intrepid kernel: [ 8.897063] [drm] Detected VRAM RAM=128M, BAR=128M Mar 21 19:07:50 intrepid kernel: [ 8.897123] [drm] RAM width 64bits DDR Mar 21 19:07:50 intrepid kernel: [ 8.897256] [TTM] Zone kernel: Available graphics memory: 1030408 kiB. Mar 21 19:07:50 intrepid kernel: [ 8.897314] [TTM] Initializing pool allocator. Mar 21 19:07:50 intrepid kernel: [ 8.897392] [drm] radeon: 128M of VRAM memory ready Mar 21 19:07:50 intrepid kernel: [ 8.897447] [drm] radeon: 64M of GTT memory ready. Mar 21 19:07:50 intrepid kernel: [ 8.899585] radeon 0000:01:00.0: WB disabled Mar 21 19:07:50 intrepid kernel: [ 8.900265] [drm] Loading R200 Microcode Mar 21 19:07:50 intrepid kernel: [ 9.381958] [drm] radeon: ring at 0x00000000F8001000 Mar 21 19:07:50 intrepid kernel: [ 9.382034] [drm] ring test succeeded in 1 usecs Mar 21 19:07:50 intrepid kernel: [ 9.384821] [drm] radeon: ib pool ready. Mar 21 19:07:50 intrepid kernel: [ 9.384959] [drm] ib test succeeded in 0 usecs Mar 21 19:07:50 intrepid kernel: [ 9.386362] [drm] Radeon Display Connectors Mar 21 19:07:50 intrepid kernel: [ 9.386417] [drm] Connector 0: Mar 21 19:07:50 intrepid kernel: [ 9.386469] [drm] VGA Mar 21 19:07:50 intrepid kernel: [ 9.386522] [drm] DDC: 0x60 0x60 0x60 0x60 0x60 0x60 0x60 0x60 Mar 21 19:07:50 intrepid kernel: [ 9.386578] [drm] Encoders: Mar 21 19:07:50 intrepid kernel: [ 9.386630] [drm] CRT1: INTERNAL_DAC1 Mar 21 19:07:50 intrepid kernel: [ 9.386684] [drm] Connector 1: Mar 21 19:07:50 intrepid kernel: [ 9.386736] [drm] DVI-D Mar 21 19:07:50 intrepid kernel: [ 9.386787] [drm] HPD1 Mar 21 19:07:50 intrepid kernel: [ 9.386839] [drm] DDC: 0x64 0x64 0x64 0x64 0x64 0x64 0x64 0x64 Mar 21 19:07:50 intrepid kernel: [ 9.386895] [drm] Encoders: Mar 21 19:07:50 intrepid kernel: [ 9.386947] [drm] DFP1: INTERNAL_TMDS1 Mar 21 19:07:50 intrepid kernel: [ 9.387001] [drm] Connector 2: Mar 21 19:07:50 intrepid kernel: [ 9.387053] [drm] S-video Mar 21 19:07:50 intrepid kernel: [ 9.387105] [drm] Encoders: Mar 21 19:07:50 intrepid kernel: [ 9.387157] [drm] TV1: INTERNAL_DAC2 Mar 21 19:07:50 intrepid kernel: [ 9.800245] [drm] fb mappable at 0xE8040000 Mar 21 19:07:50 intrepid kernel: [ 9.800303] [drm] vram apper at 0xE8000000 Mar 21 19:07:50 intrepid kernel: [ 9.802396] [drm] size 7680000 Mar 21 19:07:50 intrepid kernel: [ 9.802448] [drm] fb depth is 24 Mar 21 19:07:50 intrepid kernel: [ 9.802500] [drm] pitch is 6400 Mar 21 19:07:50 intrepid kernel: [ 10.023003] Console: switching to colour frame buffer device 200x75 Mar 21 19:07:50 intrepid kernel: [ 10.139398] fb0: radeondrmfb frame buffer device Mar 21 19:07:50 intrepid kernel: [ 10.139400] drm: registered panic notifier Mar 21 19:07:50 intrepid kernel: [ 10.140945] [drm] Initialized radeon 2.8.0 20080528 for 0000:01:00.0 on minor 0
When KMS is disabled I see this instead: Mar 21 19:10:55 intrepid kernel: [ 9.011140] [drm] Initialized radeon 1.33.0 20080528 for 0000:01:00.0 on minor 0 [...] Mar 21 19:10:55 intrepid kernel: [ 13.332368] radeonfb: Found Intel x86 BIOS ROM Image Mar 21 19:10:55 intrepid kernel: [ 13.332430] radeonfb: Retrieved PLL infos from BIOS Mar 21 19:10:55 intrepid kernel: [ 13.332487] radeonfb: Reference=27.00 MHz (RefDiv=12) Memory=200.00 Mhz, System=166.00 MHz Mar 21 19:10:55 intrepid kernel: [ 13.332556] radeonfb: PLL min 20000 max 40000 Mar 21 19:10:55 intrepid kernel: [ 13.684011] radeonfb: Monitor 1 type DFP found Mar 21 19:10:55 intrepid kernel: [ 13.684072] radeonfb: EDID probed Mar 21 19:10:55 intrepid kernel: [ 13.684124] radeonfb: Monitor 2 type CRT found Mar 21 19:10:55 intrepid kernel: [ 13.684178] radeonfb: EDID probed Mar 21 19:10:55 intrepid kernel: [ 13.747450] Console: switching to colour frame buffer device 200x75 Mar 21 19:10:55 intrepid kernel: [ 13.799573] radeonfb (0000:01:00.0): ATI Radeon 5964 "Yd"
Kurt