Seg-faults in the X server

Seg-faults in the X server

[Donald Allen]

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I have seen a few seg-faults in the X server during the time I've been 
using Void on one machine (a few weeks). It happened again a while ago and 
I was in the middle of something pressing and didn't write down the 
traceback info. I'll report it next time it happens. I've never seen this 
on my other machines, which run Arch and Arch (and OpenBSD) have run 
reliably on the machine where I'm running Void. I note that pacman reports 
the server version as xorg-server 1.17.2-4 on one of my Arch boxes, whereas 
xbps shows xorg-server-1.17.2_5, so Void may be a little newer and perhaps 
the Xorg guys broke something in the server itself or the driver I'm using 
(video hardware on this machine is 'VGA compatible controller: Advanced 
Micro Devices, Inc. [AMD/ATI] Caicos [Radeon HD 6450/7450/8450 / R5 230 
OEM]').

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Re: Seg-faults in the X server

[Donald Allen]

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Just had another one. Photo of the screen attached. I'm going to have to 
move back to Arch; this is too disruptive. I'll check back again with Void 
when I see signs that this and the other issues I've mentioned have been 
addressed.

On Thursday, October 1, 2015 at 11:19:32 AM UTC-4, Donald Allen wrote:
>
> I have seen a few seg-faults in the X server during the time I've been 
> using Void on one machine (a few weeks). It happened again a while ago and 
> I was in the middle of something pressing and didn't write down the 
> traceback info. I'll report it next time it happens. I've never seen this 
> on my other machines, which run Arch and Arch (and OpenBSD) have run 
> reliably on the machine where I'm running Void. I note that pacman reports 
> the server version as xorg-server 1.17.2-4 on one of my Arch boxes, whereas 
> xbps shows xorg-server-1.17.2_5, so Void may be a little newer and perhaps 
> the Xorg guys broke something in the server itself or the driver I'm using 
> (video hardware on this machine is 'VGA compatible controller: Advanced 
> Micro Devices, Inc. [AMD/ATI] Caicos [Radeon HD 6450/7450/8450 / R5 230 
> OEM]').
>

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Re: Seg-faults in the X server

[Christian Neukirchen]

Donald Allen <donald...@gmail.com> writes:

> Just had another one. Photo of the screen attached. I'm going to have to 
> move back to Arch; this is too disruptive. I'll check back again with Void 
> when I see signs that this and the other issues I've mentioned have been 
> addressed.

I had last Xorg-only crashes on Aug 22, but I use intel not AMD:

[261179.031] (EE) Backtrace:
[261179.049] (EE) 0: ? (?+0xca3aa380) [0xaae19489aa20]
[261179.057] (EE) 1: /usr/lib/libc.so.6 (__restore_rt+0x0) [0x7faedaad75ff]
[261179.058] (EE) 2: /usr/libexec/Xorg (?+0x0) [0x5570ca4efc50]
[261179.058] (EE) 3: /usr/libexec/Xorg (?+0x0) [0x5570ca397c60]
[261179.058] (EE) 4: /usr/libexec/Xorg (?+0x0) [0x5570ca39bc70]
[261179.059] (EE) 5: /usr/lib/libc.so.6 (__libc_start_main+0xf0) [0x7faedaac4680]
[261179.059] (EE) 6: /usr/libexec/Xorg (?+0xf0) [0x5570ca386580]
[261179.088] (EE) 7: ? (?+0xf0) [0xf0]

and Aug 23:

[ 55422.532] (EE) Backtrace:
[ 55422.543] (EE) 0: /usr/libexec/Xorg (OsLookupColor+0x119) [0x5617a79687b9]
[ 55422.550] (EE) 1: /usr/lib/libc.so.6 (__restore_rt+0x0) [0x7f6ec1d4b5ff]
[ 55422.550] (EE) 2: /usr/libexec/Xorg (FlushAllOutput+0xc1) [0x5617a7967d11]
[ 55422.550] (EE) 3: /usr/libexec/Xorg (SendErrorToClient+0x16f) [0x5617a780fdcf]
[ 55422.551] (EE) 4: /usr/libexec/Xorg (remove_fs_handlers+0x41b) [0x5617a781408b]
[ 55422.553] (EE) 5: /usr/lib/libc.so.6 (__libc_start_main+0xf0) [0x7f6ec1d38680]
[ 55422.553] (EE) 6: /usr/libexec/Xorg (_start+0x29) [0x5617a77fe4b9]
[ 55422.581] (EE) 7: ? (?+0x29) [0x29]

(My whole system crashed in the mean time, tho.  I don't have logs of that.)

-- 
Christian Neukirchen  <chneuk...@gmail.com>  http://chneukirchen.org

Re: Seg-faults in the X server

[Juan RP]

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You did not mention the machine architecture and libc variant.

Please provide more details.

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Re: Seg-faults in the X server

[Donald Allen]

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libc was glibc. dmesg attached.

On Fri, Oct 16, 2015 at 5:43 AM, Juan RP <xtr...@gmail.com> wrote:
>
> You did not mention the machine architecture and libc variant.
>
> Please provide more details.

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Copyright (c) 1992-2015 The FreeBSD Project.
Copyright (c) 1979, 1980, 1983, 1986, 1988, 1989, 1991, 1992, 1993, 1994
	The Regents of the University of California. All rights reserved.
FreeBSD is a registered trademark of The FreeBSD Foundation.
FreeBSD 10.2-RELEASE #0 r286666: Wed Aug 12 15:26:37 UTC 2015
    root@releng1.nyi.freebsd.org:/usr/obj/usr/src/sys/GENERIC amd64
FreeBSD clang version 3.4.1 (tags/RELEASE_34/dot1-final 208032) 20140512
CPU: AMD Athlon(tm) II X2 250 Processor (3010.15-MHz K8-class CPU)
  Origin="AuthenticAMD"  Id=0x100f63  Family=0x10  Model=0x6  Stepping=3
  Features=0x178bfbff<FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,CLFLUSH,MMX,FXSR,SSE,SSE2,HTT>
  Features2=0x802009<SSE3,MON,CX16,POPCNT>
  AMD Features=0xee500800<SYSCALL,NX,MMX+,FFXSR,Page1GB,RDTSCP,LM,3DNow!+,3DNow!>
  AMD Features2=0x837ff<LAHF,CMP,SVM,ExtAPIC,CR8,ABM,SSE4A,MAS,Prefetch,OSVW,IBS,SKINIT,WDT,NodeId>
  SVM: NP,NRIP,NAsids=64
  TSC: P-state invariant
real memory  = 4294967296 (4096 MB)
avail memory = 4014477312 (3828 MB)
Event timer "LAPIC" quality 400
ACPI APIC Table: <ALASKA A M I>
FreeBSD/SMP: Multiprocessor System Detected: 2 CPUs
FreeBSD/SMP: 1 package(s) x 2 core(s)
 cpu0 (BSP): APIC ID:  0
 cpu1 (AP): APIC ID:  1
ACPI BIOS Warning (bug): Optional FADT field Pm2ControlBlock has zero address or length: 0x0000000000000000/0x1 (20150515/tbfadt-673)
ioapic0 <Version 2.1> irqs 0-23 on motherboard
ioapic1 <Version 2.1> irqs 24-55 on motherboard
random: <Software, Yarrow> initialized
kbd1 at kbdmux0
acpi0: <ALASKA A M I> on motherboard
acpi0: Power Button (fixed)
cpu0: <ACPI CPU> on acpi0
cpu1: <ACPI CPU> on acpi0
attimer0: <AT timer> port 0x40-0x43 irq 0 on acpi0
Timecounter "i8254" frequency 1193182 Hz quality 0
Event timer "i8254" frequency 1193182 Hz quality 100
atrtc0: <AT realtime clock> port 0x70-0x71 irq 8 on acpi0
Event timer "RTC" frequency 32768 Hz quality 0
hpet0: <High Precision Event Timer> iomem 0xfed00000-0xfed003ff on acpi0
Timecounter "HPET" frequency 14318180 Hz quality 950
Event timer "HPET" frequency 14318180 Hz quality 550
Event timer "HPET1" frequency 14318180 Hz quality 450
Timecounter "ACPI-safe" frequency 3579545 Hz quality 850
acpi_timer0: <32-bit timer at 3.579545MHz> port 0x808-0x80b on acpi0
acpi_ec0: <Embedded Controller: GPE 0xa> port 0x62,0x66 on acpi0
pcib0: <ACPI Host-PCI bridge> port 0xcf8-0xcff on acpi0
pci0: <ACPI PCI bus> on pcib0
pcib1: <ACPI PCI-PCI bridge> irq 52 at device 2.0 on pci0
pci1: <ACPI PCI bus> on pcib1
vgapci0: <VGA-compatible display> port 0xe000-0xe0ff mem 0xc0000000-0xcfffffff,0xfea20000-0xfea3ffff irq 24 at device 0.0 on pci1
vgapci0: Boot video device
hdac0: <ATI RV910 HDA Controller> mem 0xfea40000-0xfea43fff irq 25 at device 0.1 on pci1
pcib2: <ACPI PCI-PCI bridge> irq 52 at device 4.0 on pci0
pci2: <ACPI PCI bus> on pcib2
re0: <RealTek 8168/8111 B/C/CP/D/DP/E/F/G PCIe Gigabit Ethernet> port 0xd000-0xd0ff mem 0xd0004000-0xd0004fff,0xd0000000-0xd0003fff irq 44 at device 0.0 on pci2
re0: Using 1 MSI-X message
re0: Chip rev. 0x48000000
re0: MAC rev. 0x00000000
miibus0: <MII bus> on re0
rgephy0: <RTL8169S/8110S/8211 1000BASE-T media interface> PHY 1 on miibus0
rgephy0:  none, 10baseT, 10baseT-FDX, 10baseT-FDX-flow, 100baseTX, 100baseTX-FDX, 100baseTX-FDX-flow, 1000baseT-FDX, 1000baseT-FDX-master, 1000baseT-FDX-flow, 1000baseT-FDX-flow-master, auto, auto-flow
re0: Using defaults for TSO: 65518/35/2048
re0: Ethernet address: ac:22:0b:dd:05:ff
pcib3: <ACPI PCI-PCI bridge> irq 53 at device 7.0 on pci0
pci3: <ACPI PCI bus> on pcib3
xhci0: <ASMedia ASM1042 USB 3.0 controller> mem 0xfe900000-0xfe907fff irq 50 at device 0.0 on pci3
xhci0: 32 bytes context size, 32-bit DMA
usbus0 on xhci0
ahci0: <AMD SB7x0/SB8x0/SB9x0 AHCI SATA controller> port 0xf040-0xf047,0xf030-0xf033,0xf020-0xf027,0xf010-0xf013,0xf000-0xf00f mem 0xfeb0b000-0xfeb0b3ff irq 19 at device 17.0 on pci0
ahci0: AHCI v1.20 with 2 6Gbps ports, Port Multiplier supported
ahci0: quirks=0x22000<ATI_PMP_BUG,1MSI>
ahcich4: <AHCI channel> at channel 4 on ahci0
ahcich5: <AHCI channel> at channel 5 on ahci0
ohci0: <AMD SB7x0/SB8x0/SB9x0 USB controller> mem 0xfeb0a000-0xfeb0afff irq 18 at device 18.0 on pci0
usbus1 on ohci0
ehci0: <AMD SB7x0/SB8x0/SB9x0 USB 2.0 controller> mem 0xfeb09000-0xfeb090ff irq 17 at device 18.2 on pci0
usbus2: EHCI version 1.0
usbus2 on ehci0
ohci1: <AMD SB7x0/SB8x0/SB9x0 USB controller> mem 0xfeb08000-0xfeb08fff irq 20 at device 19.0 on pci0
usbus3 on ohci1
ehci1: <AMD SB7x0/SB8x0/SB9x0 USB 2.0 controller> mem 0xfeb07000-0xfeb070ff irq 21 at device 19.2 on pci0
usbus4: EHCI version 1.0
usbus4 on ehci1
hdac1: <ATI SB600 HDA Controller> mem 0xfeb00000-0xfeb03fff irq 16 at device 20.2 on pci0
isab0: <PCI-ISA bridge> at device 20.3 on pci0
isa0: <ISA bus> on isab0
pcib4: <ACPI PCI-PCI bridge> at device 20.4 on pci0
pci4: <ACPI PCI bus> on pcib4
ohci2: <AMD SB7x0/SB8x0/SB9x0 USB controller> mem 0xfeb06000-0xfeb06fff irq 18 at device 20.5 on pci0
usbus5 on ohci2
ohci3: <AMD SB7x0/SB8x0/SB9x0 USB controller> mem 0xfeb05000-0xfeb05fff irq 22 at device 22.0 on pci0
usbus6 on ohci3
ehci2: <AMD SB7x0/SB8x0/SB9x0 USB 2.0 controller> mem 0xfeb04000-0xfeb040ff irq 23 at device 22.2 on pci0
usbus7: EHCI version 1.0
usbus7 on ehci2
acpi_button0: <Power Button> on acpi0
uart0: <16550 or compatible> port 0x3f8-0x3ff irq 4 flags 0x10 on acpi0
orm0: <ISA Option ROM> at iomem 0xc0000-0xcffff on isa0
sc0: <System console> at flags 0x100 on isa0
sc0: VGA <16 virtual consoles, flags=0x300>
vga0: <Generic ISA VGA> at port 0x3c0-0x3df iomem 0xa0000-0xbffff on isa0
atkbdc0: <Keyboard controller (i8042)> at port 0x60,0x64 on isa0
atkbd0: <AT Keyboard> irq 1 on atkbdc0
kbd0 at atkbd0
atkbd0: [GIANT-LOCKED]
ppc0: cannot reserve I/O port range
hwpstate0: <Cool`n'Quiet 2.0> on cpu0
random: unblocking device.
usbus0: 5.0Gbps Super Speed USB v3.0
Timecounters tick every 1.000 msec
hdacc0: <ATI R6xx HDA CODEC> at cad 0 on hdac0
hdaa0: <ATI R6xx Audio Function Group> at nid 1 on hdacc0
pcm0: <ATI R6xx (HDMI)> at nid 3 on hdaa0
hdacc1: <Realtek ALC887 HDA CODEC> at cad 0 on hdac1
hdaa1: <Realtek ALC887 Audio Function Group> at nid 1 on hdacc1
pcm1: <Realtek ALC887 (Rear Analog)> at nid 20 and 24,26 on hdaa1
pcm2: <Realtek ALC887 (Front Analog)> at nid 27 and 25 on hdaa1
pcm3: <Realtek ALC887 (Onboard Digital)> at nid 17 on hdaa1
usbus1: 12Mbps Full Speed USB v1.0
usbus2: 480Mbps High Speed USB v2.0
usbus3: 12Mbps Full Speed USB v1.0
usbus4: 480Mbps High Speed USB v2.0
usbus5: 12Mbps Full Speed USB v1.0
usbus6: 12Mbps Full Speed USB v1.0
usbus7: 480Mbps High Speed USB v2.0
ugen1.1: <ATI> at usbus1
uhub0: <ATI OHCI root HUB, class 9/0, rev 1.00/1.00, addr 1> on usbus1
ugen0.1: <0x1b21> at usbus0
uhub1: <0x1b21 XHCI root HUB, class 9/0, rev 3.00/1.00, addr 1> on usbus0
ugen4.1: <ATI> at usbus4
uhub2: <ATI EHCI root HUB, class 9/0, rev 2.00/1.00, addr 1> on usbus4
ugen3.1: <ATI> at usbus3
uhub3: <ATI OHCI root HUB, class 9/0, rev 1.00/1.00, addr 1> on usbus3
ugen2.1: <ATI> at usbus2
uhub4: <ATI EHCI root HUB, class 9/0, rev 2.00/1.00, addr 1> on usbus2
ugen7.1: <ATI> at usbus7
uhub5: <ATI EHCI root HUB, class 9/0, rev 2.00/1.00, addr 1> on usbus7
ugen6.1: <ATI> at usbus6
uhub6: <ATI OHCI root HUB, class 9/0, rev 1.00/1.00, addr 1> on usbus6
ugen5.1: <ATI> at usbus5
uhub7: <ATI OHCI root HUB, class 9/0, rev 1.00/1.00, addr 1> on usbus5
ada0 at ahcich4 bus 0 scbus0 target 0 lun 0
ada0: <Hitachi HDP725050GLA360 GM4OA5CA> ATA8-ACS SATA 2.x device
cd0 at ahcich5 bus 0 scbus1 target 0 lun 0
cd0: <ATAPI iHAS424   Y ZL1U> Removable CD-ROM SCSI device
cd0: 150.000MB/s transfers (SATA 1.x, UDMA5, ATAPI 12bytes, PIO 8192bytes)
cd0: Attempt to query device size failed: NOT READY, Medium not present - tray closed
ada0: Serial Number GEA534RV1DGHNA
ada0: 300.000MB/s transfers (SATA 2.x, UDMA6, PIO 8192bytes)
ada0: Command Queueing enabled
ada0: 476940MB (976773168 512 byte sectors: 16H 63S/T 16383C)
ada0: Previously was known as ad4
uhub7: 2 ports with 2 removable, self powered
SMP: AP CPU #1 Launched!
Timecounter "TSC-low" frequency 1505074590 Hz quality 800
uhub6: 4 ports with 4 removable, self powered
Root mount waiting for: usbus7 usbus4 usbus3 usbus2 usbus1 usbus0
uhub0: 5 ports with 5 removable, self powered
uhub3: 5 ports with 5 removable, self powered
uhub1: 4 ports with 4 removable, self powered
Root mount waiting for: usbus7 usbus4 usbus2
uhub5: 4 ports with 4 removable, self powered
uhub4: 5 ports with 5 removable, self powered
uhub2: 5 ports with 5 removable, self powered
ugen2.2: <vendor 0x0409> at usbus2
uhub8: <vendor 0x0409 product 0x005a, class 9/0, rev 2.00/1.00, addr 2> on usbus2
Root mount waiting for: usbus2
uhub8: 4 ports with 4 removable, self powered
Root mount waiting for: usbus2
ugen2.3: <vendor 0x0557> at usbus2
uhub9: <vendor 0x0557 product 0x7000, class 9/0, rev 1.10/1.00, addr 3> on usbus2
uhub9: 4 ports with 4 removable, self powered
Root mount waiting for: usbus2
ugen2.4: <ATEN> at usbus2
ukbd0: <Kb> on usbus2
kbd2 at ukbd0
Trying to mount root from ufs:/dev/ada0p2 [rw]...
ugen2.5: <vendor 0x2001> at usbus2
uhub10: <vendor 0x2001 product 0xf103, class 9/0, rev 2.00/1.00, addr 5> on usbus2
uhub10: 7 ports with 1 removable, self powered
ums0: <ATEN SW2-RA V1.0.072, class 0/0, rev 1.10/1.00, addr 4> on usbus2
ums0: 5 buttons and [XYZ] coordinates ID=0
info: [drm] Initialized drm 1.1.0 20060810
drmn0: <Caicos [Radeon HD 6450]> on vgapci0
info: [drm] RADEON_IS_PCIE
info: [drm] initializing kernel modesetting (CAICOS 0x1002:0x6779 0x1043:0x04B5).
info: [drm] register mmio base: 0xFEA20000
info: [drm] register mmio size: 131072
info: [drm] radeon_atrm_get_bios: ===> Try ATRM...
info: [drm] radeon_atrm_get_bios: pci_find_class() found: 0:1:0:0, vendor=1002, device=6779
info: [drm] radeon_atrm_get_bios: Get ACPI device handle
info: [drm] radeon_acpi_vfct_bios: ===> Try VFCT...
info: [drm] radeon_acpi_vfct_bios: Get "VFCT" ACPI table
info: [drm] radeon_acpi_vfct_bios: Failed to get "VFCT" table: AE_NOT_FOUND
info: [drm] igp_read_bios_from_vram: ===> Try IGP's VRAM...
info: [drm] igp_read_bios_from_vram: VRAM base address: 0xc0000000
info: [drm] igp_read_bios_from_vram: Map address: 0xfffff800c0000000 (262144 bytes)
info: [drm] igp_read_bios_from_vram: Incorrect BIOS signature: 0x4907
info: [drm] radeon_read_bios: ===> Try PCI Expansion ROM...
info: [drm] radeon_read_bios: Map address: 0xfffff800000c0000 (131072 bytes)
info: [drm] ATOM BIOS: 6779.13.12.0.48.AS01
drmn0: info: VRAM: 1024M 0x0000000000000000 - 0x000000003FFFFFFF (1024M used)
drmn0: info: GTT: 512M 0x0000000040000000 - 0x000000005FFFFFFF
info: [drm] Detected VRAM RAM=1024M, BAR=256M
info: [drm] RAM width 64bits DDR
[TTM] Zone  kernel: Available graphics memory: 2041046 kiB
[TTM] Initializing pool allocator
info: [drm] radeon: 1024M of VRAM memory ready
info: [drm] radeon: 512M of GTT memory ready.
info: [drm] Supports vblank timestamp caching Rev 1 (10.10.2010).
info: [drm] Driver supports precise vblank timestamp query.
info: [drm] MSI enabled 1 message(s)
drmn0: info: radeon: using MSI.
info: [drm] radeon: irq initialized.
info: [drm] GART: num cpu pages 131072, num gpu pages 131072
info: [drm] probing gen 2 caps for device 1002:5a16 = 2/0
info: [drm] enabling PCIE gen 2 link speeds, disable with radeon.pcie_gen2=0
info: [drm] Loading CAICOS Microcode
info: [drm] PCIE GART of 512M enabled (table at 0x0000000000040000).
drmn0: info: WB enabled
drmn0: info: fence driver on ring 0 use gpu addr 0x0000000040000c00 and cpu addr 0x0xfffff80005a9ac00
drmn0: info: fence driver on ring 3 use gpu addr 0x0000000040000c0c and cpu addr 0x0xfffff80005a9ac0c
info: [drm] ring test on 0 succeeded in 2 usecs
info: [drm] ring test on 3 succeeded in 1 usecs
info: [drm] ib test on ring 0 succeeded in 0 usecs
info: [drm] ib test on ring 3 succeeded in 0 usecs
info: [drm] radeon_device_init: Taking over the fictitious range 0xc0000000-0xd0000000
iicbus0: <Philips I2C bus> on iicbb0 addr 0xff
iic0: <I2C generic I/O> on iicbus0
iicbus1: <Philips I2C bus> on iicbb1 addr 0x0
iic1: <I2C generic I/O> on iicbus1
iicbus2: <Philips I2C bus> on iicbb2 addr 0x0
iic2: <I2C generic I/O> on iicbus2
iicbus3: <Philips I2C bus> on iicbb3 addr 0x0
iic3: <I2C generic I/O> on iicbus3
iicbus4: <Philips I2C bus> on iicbb4 addr 0x0
iic4: <I2C generic I/O> on iicbus4
iicbus5: <Philips I2C bus> on iicbb5 addr 0x0
iic5: <I2C generic I/O> on iicbus5
iicbus6: <Philips I2C bus> on iicbb6 addr 0x0
iic6: <I2C generic I/O> on iicbus6
iicbus7: <Philips I2C bus> on iicbb7 addr 0x0
iic7: <I2C generic I/O> on iicbus7
info: [drm] Radeon Display Connectors
info: [drm] Connector 0:
info: [drm]   HDMI-A-1
info: [drm]   HPD2
info: [drm]   DDC: 0x6460 0x6460 0x6464 0x6464 0x6468 0x6468 0x646c 0x646c
info: [drm]   Encoders:
info: [drm]     DFP1: INTERNAL_UNIPHY1
info: [drm] Connector 1:
info: [drm]   DVI-D-1
info: [drm]   HPD4
info: [drm]   DDC: 0x6440 0x6440 0x6444 0x6444 0x6448 0x6448 0x644c 0x644c
info: [drm]   Encoders:
info: [drm]     DFP2: INTERNAL_UNIPHY
info: [drm] Connector 2:
info: [drm]   VGA-1
info: [drm]   DDC: 0x6430 0x6430 0x6434 0x6434 0x6438 0x6438 0x643c 0x643c
info: [drm]   Encoders:
info: [drm]     CRT1: INTERNAL_KLDSCP_DAC1
info: [drm] Internal thermal controller without fan control
info: [drm] radeon: power management initialized
info: [drm] Connector HDMI-A-1: get mode from tunables:
info: [drm]   - kern.vt.fb.modes.HDMI-A-1
info: [drm]   - kern.vt.fb.default_mode
info: [drm] Connector DVI-D-1: get mode from tunables:
info: [drm]   - kern.vt.fb.modes.DVI-D-1
info: [drm]   - kern.vt.fb.default_mode
info: [drm] Connector VGA-1: get mode from tunables:
info: [drm]   - kern.vt.fb.modes.VGA-1
info: [drm]   - kern.vt.fb.default_mode
info: [drm] fb mappable at 0xC0142000
info: [drm] vram apper at 0xC0000000
info: [drm] size 8294400
info: [drm] fb depth is 24
info: [drm]    pitch is 7680
fbd0 on drmn0
info: [drm] Initialized radeon 2.29.0 20080528 for drmn0 on minor 0