First of all: props to all the people who are working to make 5.5 one of the best releases! It's amazing to boot into Gnome 3.10 with Radeon KMS with machdep.allowaperture=0 :)
Back to my "problem": I've installed my desktop machine (dmesg attached) twice from different snapshots. The newest snapshot was from the 28th of February. With both these snapshots I experienced a bug on first boot. During first boot, fw_update is run to download the firmware for my Radeon graphics card. However, the driver tries to do KMS before the firmware is available, which results in the screen turning blank. After SSH-ing to the box to make sure fw_update finished correctly, I can reboot the machine and everything works great on all further boots. I think the driver should somehow refrain from doing KMS on first boot, or the machine should automatically reboot after fw_update to prevent this from happening. Keep up the good work! Frank OpenBSD 5.5 (GENERIC.MP) #301: Thu Feb 27 09:42:27 MST 2014 dera...@amd64.openbsd.org:/usr/src/sys/arch/amd64/compile/GENERIC.MP real mem = 4275572736 (4077MB) avail mem = 4153147392 (3960MB) mainbus0 at root bios0 at mainbus0: SMBIOS rev. 2.4 @ 0xf0100 (59 entries) bios0: vendor Award Software International, Inc. version "F7" date 11/20/2009 bios0: Gigabyte Technology Co., Ltd. GA-MA790XT-UD4P acpi0 at bios0: rev 0 acpi0: sleep states S0 S3 S4 S5 acpi0: tables DSDT FACP SSDT HPET MCFG TAMG APIC acpi0: wakeup devices USB0(S3) USB1(S3) USB2(S3) USB3(S3) USB4(S3) USB5(S3) USB6(S3) SBAZ(S4) P2P_(S5) PCE2(S4) PCE3(S4) PCE4(S4) PCE5(S4) PCE6(S4) PCE7(S4) PCE8(S4) [...] acpitimer0 at acpi0: 3579545 Hz, 32 bits acpihpet0 at acpi0: 14318180 Hz acpimcfg0 at acpi0 addr 0xe0000000, bus 0-255 acpimadt0 at acpi0 addr 0xfee00000: PC-AT compat cpu0 at mainbus0: apid 0 (boot processor) cpu0: AMD Phenom(tm) II X4 905e Processor, 2511.81 MHz cpu0: FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,CFLUSH,MMX,FXSR,SSE,SSE2,HTT,SSE3,MWAIT,CX16,POPCNT,NXE,MMXX,FFXSR,LONG,3DNOW2,3DNOW,LAHF,CMPLEG,SVM,EAPICSP,AMCR8,ABM,SSE4A,MASSE,3DNOWP,OSVW,IBS,SKINIT,ITSC cpu0: 64KB 64b/line 2-way I-cache, 64KB 64b/line 2-way D-cache, 512KB 64b/line 16-way L2 cache, 6MB 64b/line 48-way L3 cache cpu0: ITLB 32 4KB entries fully associative, 16 4MB entries fully associative cpu0: DTLB 48 4KB entries fully associative, 48 4MB entries fully associative cpu0: AMD erratum 721 detected and fixed cpu0: smt 0, core 0, package 0 mtrr: Pentium Pro MTRR support, 8 var ranges, 88 fixed ranges cpu0: apic clock running at 200MHz cpu0: mwait min=64, max=64, C-substates=0.0.0.0.0, IBE cpu1 at mainbus0: apid 1 (application processor) cpu1: AMD Phenom(tm) II X4 905e Processor, 2511.45 MHz cpu1: FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,CFLUSH,MMX,FXSR,SSE,SSE2,HTT,SSE3,MWAIT,CX16,POPCNT,NXE,MMXX,FFXSR,LONG,3DNOW2,3DNOW,LAHF,CMPLEG,SVM,EAPICSP,AMCR8,ABM,SSE4A,MASSE,3DNOWP,OSVW,IBS,SKINIT,ITSC cpu1: 64KB 64b/line 2-way I-cache, 64KB 64b/line 2-way D-cache, 512KB 64b/line 16-way L2 cache, 6MB 64b/line 48-way L3 cache cpu1: ITLB 32 4KB entries fully associative, 16 4MB entries fully associative cpu1: DTLB 48 4KB entries fully associative, 48 4MB entries fully associative cpu1: AMD erratum 721 detected and fixed cpu1: smt 0, core 1, package 0 cpu2 at mainbus0: apid 2 (application processor) cpu2: AMD Phenom(tm) II X4 905e Processor, 2511.45 MHz cpu2: FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,CFLUSH,MMX,FXSR,SSE,SSE2,HTT,SSE3,MWAIT,CX16,POPCNT,NXE,MMXX,FFXSR,LONG,3DNOW2,3DNOW,LAHF,CMPLEG,SVM,EAPICSP,AMCR8,ABM,SSE4A,MASSE,3DNOWP,OSVW,IBS,SKINIT,ITSC cpu2: 64KB 64b/line 2-way I-cache, 64KB 64b/line 2-way D-cache, 512KB 64b/line 16-way L2 cache, 6MB 64b/line 48-way L3 cache cpu2: ITLB 32 4KB entries fully associative, 16 4MB entries fully associative cpu2: DTLB 48 4KB entries fully associative, 48 4MB entries fully associative cpu2: AMD erratum 721 detected and fixed cpu2: smt 0, core 2, package 0 cpu3 at mainbus0: apid 3 (application processor) cpu3: AMD Phenom(tm) II X4 905e Processor, 2511.45 MHz cpu3: FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,CFLUSH,MMX,FXSR,SSE,SSE2,HTT,SSE3,MWAIT,CX16,POPCNT,NXE,MMXX,FFXSR,LONG,3DNOW2,3DNOW,LAHF,CMPLEG,SVM,EAPICSP,AMCR8,ABM,SSE4A,MASSE,3DNOWP,OSVW,IBS,SKINIT,ITSC cpu3: 64KB 64b/line 2-way I-cache, 64KB 64b/line 2-way D-cache, 512KB 64b/line 16-way L2 cache, 6MB 64b/line 48-way L3 cache cpu3: ITLB 32 4KB entries fully associative, 16 4MB entries fully associative cpu3: DTLB 48 4KB entries fully associative, 48 4MB entries fully associative cpu3: AMD erratum 721 detected and fixed cpu3: smt 0, core 3, package 0 ioapic0 at mainbus0: apid 2 pa 0xfec00000, version 21, 24 pins ioapic0: misconfigured as apic 0, remapped to apid 2 acpiprt0 at acpi0: bus 0 (PCI0) acpiprt1 at acpi0: bus 3 (P2P_) acpiprt2 at acpi0: bus 1 (PCE2) acpiprt3 at acpi0: bus -1 (PCE3) acpiprt4 at acpi0: bus -1 (PCE4) acpiprt5 at acpi0: bus -1 (PCE5) acpiprt6 at acpi0: bus -1 (PCE6) acpiprt7 at acpi0: bus -1 (PCE7) acpiprt8 at acpi0: bus -1 (PCE8) acpiprt9 at acpi0: bus -1 (PCE9) acpiprt10 at acpi0: bus 2 (PCEA) acpiprt11 at acpi0: bus -1 (PCEB) acpiprt12 at acpi0: bus -1 (PCEC) acpicpu0 at acpi0: PSS acpicpu1 at acpi0: PSS acpicpu2 at acpi0: PSS acpicpu3 at acpi0: PSS acpibtn0 at acpi0: PWRB cpu0: 2511 MHz: speeds: 2500 1900 1400 800 MHz pci0 at mainbus0 bus 0 0:0:0: mem address conflict 0xe0000000/0x20000000 pchb0 at pci0 dev 0 function 0 "ATI RD780 HT-PCIE" rev 0x00 ppb0 at pci0 dev 2 function 0 "ATI RD790 PCIE" rev 0x00 pci1 at ppb0 bus 1 radeondrm0 at pci1 dev 0 function 0 "ATI Radeon HD 6670" rev 0x00 drm0 at radeondrm0 radeondrm0: msi azalia0 at pci1 dev 0 function 1 "ATI Radeon HD 6670 Audio" rev 0x00: msi azalia0: no supported codecs ppb1 at pci0 dev 10 function 0 "ATI RD790 PCIE" rev 0x00 pci2 at ppb1 bus 2 re0 at pci2 dev 0 function 0 "Realtek 8168" rev 0x03: RTL8168D/8111D (0x2800), msi, address 00:24:1d:1d:c6:34 rgephy0 at re0 phy 7: RTL8169S/8110S PHY, rev. 2 ahci0 at pci0 dev 17 function 0 "ATI SBx00 SATA" rev 0x00: apic 2 int 22, AHCI 1.1 scsibus0 at ahci0: 32 targets sd0 at scsibus0 targ 0 lun 0: <ATA, SAMSUNG HD502HI, 1AG0> SCSI3 0/direct fixed naa.50000f010051fc3d sd0: 476938MB, 512 bytes/sector, 976771055 sectors sd1 at scsibus0 targ 1 lun 0: <ATA, SAMSUNG HD502HI, 1AG0> SCSI3 0/direct fixed naa.50024e9200b2a5f5 sd1: 476940MB, 512 bytes/sector, 976773168 sectors sd2 at scsibus0 targ 2 lun 0: <ATA, OCZ-VERTEX2, 1.24> SCSI3 0/direct fixed naa.5e83a97f2abfdfd8 sd2: 57241MB, 512 bytes/sector, 117231408 sectors, thin cd0 at scsibus0 targ 3 lun 0: <TSSTcorp, CDDVDW SH-S223B, SB00> ATAPI 5/cdrom removable ohci0 at pci0 dev 18 function 0 "ATI SB700 USB" rev 0x00: apic 2 int 16, version 1.0, legacy support ohci1 at pci0 dev 18 function 1 "ATI SB700 USB" rev 0x00: apic 2 int 16, version 1.0, legacy support ohci1: SMM does not respond, will reset ehci0 at pci0 dev 18 function 2 "ATI SB700 USB2" rev 0x00: apic 2 int 17 usb0 at ehci0: USB revision 2.0 uhub0 at usb0 "ATI EHCI root hub" rev 2.00/1.00 addr 1 ohci2 at pci0 dev 19 function 0 "ATI SB700 USB" rev 0x00: apic 2 int 18, version 1.0, legacy support ohci3 at pci0 dev 19 function 1 "ATI SB700 USB" rev 0x00: apic 2 int 18, version 1.0, legacy support ehci1 at pci0 dev 19 function 2 "ATI SB700 USB2" rev 0x00: apic 2 int 19 usb1 at ehci1: USB revision 2.0 uhub1 at usb1 "ATI EHCI root hub" rev 2.00/1.00 addr 1 piixpm0 at pci0 dev 20 function 0 "ATI SBx00 SMBus" rev 0x3a: SMI iic0 at piixpm0 spdmem0 at iic0 addr 0x50: 2GB DDR3 SDRAM PC3-10600 spdmem1 at iic0 addr 0x51: 2GB DDR3 SDRAM PC3-10600 pciide0 at pci0 dev 20 function 1 "ATI SB700 IDE" rev 0x00: DMA, channel 0 configured to compatibility, channel 1 configured to compatibility azalia1 at pci0 dev 20 function 2 "ATI SBx00 HD Audio" rev 0x00: apic 2 int 16 azalia1: codecs: Realtek ALC885 audio0 at azalia1 pcib0 at pci0 dev 20 function 3 "ATI SB700 ISA" rev 0x00 ppb2 at pci0 dev 20 function 4 "ATI SB600 PCI" rev 0x00 pci3 at ppb2 bus 3 "TI TSB43AB23 FireWire" rev 0x00 at pci3 dev 14 function 0 not configured ohci4 at pci0 dev 20 function 5 "ATI SB700 USB" rev 0x00: apic 2 int 18, version 1.0, legacy support pchb1 at pci0 dev 24 function 0 "AMD AMD64 10h HyperTransport" rev 0x00 pchb2 at pci0 dev 24 function 1 "AMD AMD64 10h Address Map" rev 0x00 pchb3 at pci0 dev 24 function 2 "AMD AMD64 10h DRAM Cfg" rev 0x00 km0 at pci0 dev 24 function 3 "AMD AMD64 10h Misc Cfg" rev 0x00 pchb4 at pci0 dev 24 function 4 "AMD AMD64 10h Link Cfg" rev 0x00 usb2 at ohci0: USB revision 1.0 uhub2 at usb2 "ATI OHCI root hub" rev 1.00/1.00 addr 1 usb3 at ohci1: USB revision 1.0 uhub3 at usb3 "ATI OHCI root hub" rev 1.00/1.00 addr 1 usb4 at ohci2: USB revision 1.0 uhub4 at usb4 "ATI OHCI root hub" rev 1.00/1.00 addr 1 usb5 at ohci3: USB revision 1.0 uhub5 at usb5 "ATI OHCI root hub" rev 1.00/1.00 addr 1 isa0 at pcib0 isadma0 at isa0 com0 at isa0 port 0x3f8/8 irq 4: ns16550a, 16 byte fifo pckbc0 at isa0 port 0x60/5 pcppi0 at isa0 port 0x61 spkr0 at pcppi0 it0 at isa0 port 0x2e/2: IT8720F rev 5, EC port 0x228 usb6 at ohci4: USB revision 1.0 uhub6 at usb6 "ATI OHCI root hub" rev 1.00/1.00 addr 1 uhidev0 at uhub2 port 3 configuration 1 interface 0 "Logitech USB Laser Mouse" rev 2.00/31.00 addr 2 uhidev0: iclass 3/1 ums0 at uhidev0: 8 buttons, Z dir wsmouse0 at ums0 mux 0 uhidev1 at uhub4 port 3 configuration 1 interface 0 "Microsoft Comfort Curve Keyboard 2000" rev 2.00/1.73 addr 2 uhidev1: iclass 3/1 ukbd0 at uhidev1: 8 variable keys, 6 key codes wskbd0 at ukbd0: console keyboard uhidev2 at uhub4 port 3 configuration 1 interface 1 "Microsoft Comfort Curve Keyboard 2000" rev 2.00/1.73 addr 2 uhidev2: iclass 3/0, 1 report id uhid0 at uhidev2 reportid 1: input=7, output=0, feature=0 vscsi0 at root scsibus1 at vscsi0: 256 targets softraid0 at root scsibus2 at softraid0: 256 targets sd3 at scsibus2 targ 1 lun 0: <OPENBSD, SR CRYPTO, 005> SCSI2 0/direct fixed sd3: 57239MB, 512 bytes/sector, 117225713 sectors root on sd3a (eb92a9b468b2b0be.a) swap on sd3b dump on sd3b drm: initializing kernel modesetting (TURKS 0x1002:0x6758 0x1462:0x2508). radeondrm0: VRAM: 2048M 0x0000000000000000 - 0x000000007FFFFFFF (2048M used) radeondrm0: GTT: 512M 0x0000000080000000 - 0x000000009FFFFFFF drm: probing gen 2 caps for device 0x1002:0x5978 = 2/0 drm: enabling PCIE gen 2 link speeds, disable with radeon.pcie_gen2=0 drm: PCIE GART of 512M enabled (table at 0x0000000000040000). drm: Internal thermal controller with fan control radeondrm0: 1920x1200 wsdisplay0 at radeondrm0 mux 1: console (std, vt100 emulation), using wskbd0 wsdisplay0: screen 1-5 added (std, vt100 emulation)