Hello! While I was trying (without success) to make KMS work on my PC I saw in DMESG a message that asked me to make a report to your mailing list:
([drm] DDC: no ddc bus - possible BIOS bug - please report to [email protected]) So I'm doing this report now, and wolud like to exploit the occasion to tell you about another (trivial) thing about the driver firmware loading. Following I report few details about how I got that message: I have a mainline 2.6.37 and a RV730 PRO [Radeon HD 4650] PCIexpress card. What happen here is that without KMS all works (console OK, X OK, DRI OK) but with KSM the screen become black during kernel loading. By default my system does NOT run X after boot. I think my monitor is not recognized. it is connected via DVI. The card has also a HDMI and a VGA connectors. Please note that in the log you will also see some messages you will not recognize: I have added some printk in the r600.c kernel driver to trace initialization flow. I did no any other modification in the code. I needed to add those to investigate another issue I had (now resolved) with this driver related to firmware loading: The problem was that I had no any diagnostic message when a microcode file was missing (r700_rlc.bin) Can I suggest you to add some printk when request_firmware fails? I think this can be very helpful in order to help to individuate this kind of problem and to individuate the specific file that is missing. The "goto out" branch for failing firmware_request printed nothing.. The system simply hung (the screen was still showing the latest good image with readable kernel message "Loading RV730 microcode") without giving any other hint. If you need some other info, or if you need I make some test please ask me. I will be happy to do. Please CC me in case of some discussion about this. Thanks a lot Andrea Jan 17 00:49:38 supernova kernel: [ 0.302490] [drm] Initialized drm 1.1.0 20060810 Jan 17 00:49:38 supernova kernel: [ 0.302549] [drm] radeon defaulting to kernel modesetting. Jan 17 00:49:38 supernova kernel: [ 0.302581] [drm] radeon kernel modesetting enabled. Jan 17 00:49:38 supernova kernel: [ 0.302645] radeon 0000:01:00.0: PCI INT A -> GSI 16 (level, low) -> IRQ 16 Jan 17 00:49:38 supernova kernel: [ 0.305142] [drm] initializing kernel modesetting (RV730 0x1002:0x9498). Jan 17 00:49:38 supernova kernel: [ 0.305239] [drm] register mmio base: 0xFE8E0000 Jan 17 00:49:38 supernova kernel: [ 0.305271] [drm] register mmio size: 65536 Jan 17 00:49:38 supernova kernel: [ 0.305422] ATOM BIOS: 4650 Jan 17 00:49:38 supernova kernel: [ 0.305476] radeon 0000:01:00.0: VRAM: 1024M 0x0000000000000000 - 0x000000003FFFFFFF (1024M used) Jan 17 00:49:38 supernova kernel: [ 0.305515] radeon 0000:01:00.0: GTT: 512M 0x0000000040000000 - 0x000000005FFFFFFF Jan 17 00:49:38 supernova kernel: [ 0.305556] mtrr: type mismatch for d0000000,10000000 old: write-back new: write-combining Jan 17 00:49:38 supernova kernel: [ 0.305593] [drm] Detected VRAM RAM=1024M, BAR=256M Jan 17 00:49:38 supernova kernel: [ 0.305624] [drm] RAM width 128bits DDR Jan 17 00:49:38 supernova kernel: [ 0.305677] [TTM] Zone kernel: Available graphics memory: 2026446 kiB. Jan 17 00:49:38 supernova kernel: [ 0.305710] [TTM] Initializing pool allocator. Jan 17 00:49:38 supernova kernel: [ 0.305757] [drm] radeon: 1024M of VRAM memory ready Jan 17 00:49:38 supernova kernel: [ 0.305789] [drm] radeon: 512M of GTT memory ready. Jan 17 00:49:38 supernova kernel: [ 0.305866] radeon 0000:01:00.0: radeon: using MSI. Jan 17 00:49:38 supernova kernel: [ 0.305921] [drm] radeon: irq initialized. Jan 17 00:49:38 supernova kernel: [ 0.305953] [drm] GART: num cpu pages 131072, num gpu pages 131072 Jan 17 00:49:38 supernova kernel: [ 0.307035] [drm] Loading RV730 Microcode Jan 17 00:49:38 supernova kernel: [ 0.307068] [drm] requesting radeon/RV730_pfp.bin Jan 17 00:49:38 supernova kernel: [ 0.307102] [drm] requesting radeon/RV730_me.bin Jan 17 00:49:38 supernova kernel: [ 0.307133] [drm] requesting radeon/R700_rlc.bin Jan 17 00:49:38 supernova kernel: [ 0.307164] [drm] Aff fw has been get Jan 17 00:49:38 supernova kernel: [ 0.308936] radeon 0000:01:00.0: WB enabled Jan 17 00:49:38 supernova kernel: [ 0.339215] [drm] r600 resume Jan 17 00:49:38 supernova kernel: [ 0.355248] [drm] r600 cp start Jan 17 00:49:38 supernova kernel: [ 0.355279] [drm] r600 cp start exiting Jan 17 00:49:38 supernova kernel: [ 0.355309] [drm] r600 ring test Jan 17 00:49:38 supernova kernel: [ 0.355342] [drm] ring test succeeded in 1 usecs Jan 17 00:49:38 supernova kernel: [ 0.355460] [drm] radeon: ib pool ready. Jan 17 00:49:38 supernova kernel: [ 0.355564] [drm] ib test succeeded in 0 usecs Jan 17 00:49:38 supernova kernel: [ 0.355595] [drm] Enabling audio support Jan 17 00:49:38 supernova kernel: [ 0.356072] [drm] Radeon Display Connectors Jan 17 00:49:38 supernova kernel: [ 0.356103] [drm] Connector 0: Jan 17 00:49:38 supernova kernel: [ 0.356133] [drm] DVI-I Jan 17 00:49:38 supernova kernel: [ 0.356162] [drm] DDC: no ddc bus - possible BIOS bug - please report to [email protected] Jan 17 00:49:38 supernova kernel: [ 0.356199] [drm] Encoders: Jan 17 00:49:38 supernova kernel: [ 0.356229] [drm] CRT2: INTERNAL_KLDSCP_DAC2 Jan 17 00:49:38 supernova kernel: [ 0.356259] [drm] TV1: INTERNAL_KLDSCP_DAC2 Jan 17 00:49:38 supernova kernel: [ 0.356290] [drm] DFP2: INTERNAL_UNIPHY1 Jan 17 00:49:38 supernova kernel: [ 0.356320] [drm] Connector 1: Jan 17 00:49:38 supernova kernel: [ 0.356349] [drm] HDMI-A Jan 17 00:49:38 supernova kernel: [ 0.356378] [drm] HPD3 Jan 17 00:49:38 supernova kernel: [ 0.356407] [drm] DDC: 0x7e40 0x7e40 0x7e44 0x7e44 0x7e48 0x7e48 0x7e4c 0x7e4c Jan 17 00:49:38 supernova kernel: [ 0.356443] [drm] Encoders: Jan 17 00:49:38 supernova kernel: [ 0.356473] [drm] DFP1: INTERNAL_UNIPHY Jan 17 00:49:38 supernova kernel: [ 0.356503] [drm] Connector 2: Jan 17 00:49:38 supernova kernel: [ 0.356532] [drm] DVI-I Jan 17 00:49:38 supernova kernel: [ 0.356561] [drm] HPD1 Jan 17 00:49:38 supernova kernel: [ 0.356590] [drm] DDC: 0x7e20 0x7e20 0x7e24 0x7e24 0x7e28 0x7e28 0x7e2c 0x7e2c Jan 17 00:49:38 supernova kernel: [ 0.356626] [drm] Encoders: Jan 17 00:49:38 supernova kernel: [ 0.356655] [drm] DFP1: INTERNAL_UNIPHY Jan 17 00:49:38 supernova kernel: [ 0.356691] [drm] CRT1: INTERNAL_KLDSCP_DAC1 Jan 17 00:49:38 supernova kernel: [ 0.360618] [drm] Internal thermal controller without fan control Jan 17 00:49:38 supernova kernel: [ 0.361294] [drm] radeon: power management initialized Jan 17 00:49:38 supernova kernel: [ 0.390317] No connectors reported connected with modes Jan 17 00:49:38 supernova kernel: [ 0.390350] [drm] Cannot find any crtc or sizes - going 1024x768 Jan 17 00:49:38 supernova kernel: [ 0.391894] [drm] fb mappable at 0xD0142000 Jan 17 00:49:38 supernova kernel: [ 0.391925] [drm] vram apper at 0xD0000000 Jan 17 00:49:38 supernova kernel: [ 0.391955] [drm] size 3145728 Jan 17 00:49:38 supernova kernel: [ 0.391984] [drm] fb depth is 24 Jan 17 00:49:38 supernova kernel: [ 0.392014] [drm] pitch is 4096 Jan 17 00:49:38 supernova kernel: [ 0.392162] fbcon: radeondrmfb (fb0) is primary device Jan 17 00:49:38 supernova kernel: [ 0.395804] Console: switching to colour frame buffer device 128x48 Jan 17 00:49:38 supernova kernel: [ 0.397260] fb0: radeondrmfb frame buffer device Jan 17 00:49:38 supernova kernel: [ 0.397278] drm: registered panic notifier Jan 17 00:49:38 supernova kernel: [ 0.397298] [drm] Initialized radeon 2.7.0 20080528 for 0000:01:00.0 on minor 0 _______________________________________________ xorg-driver-ati mailing list [email protected] http://lists.x.org/mailman/listinfo/xorg-driver-ati
