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problem with wheezy boot?




is it possible to disable drm during boot?
i think it cause problem some times
debian has ati display problem with my other PC early
strangely the only way I know to solve it is:
remove PC case, insert or remove some PCI card
and then wheezy boot OK

windows XP share same disk with wheezy,
it never has such problem, so the problem is with wheezy
linux isn't as stable as i thought

i have tried methods below, it doesn't work
enter BIOS menu, make some change, and reboot

i want to try wheezy kernel for 486
kernel for 686(default) and AMD all have problem
if fail, i will have to try stretch

below are msg related to problem:

Oct 27 07:53:57 debian kernel: [    6.488556] saa7134[0]: registered device radio0
Oct 27 07:53:57 debian kernel: [    6.565769] [drm] radeon kernel modesetting enabled.
Oct 27 07:53:57 debian kernel: [    6.566363] [drm] initializing kernel modesetting (RS480 0x1002:0x5954 0x103C:0x3009).
Oct 27 07:53:57 debian kernel: [    6.566402] [drm] register mmio base: 0xFDAF0000
Oct 27 07:53:57 debian kernel: [    6.566407] [drm] register mmio size: 65536
Oct 27 07:53:57 debian kernel: [    6.568562] [drm] Generation 2 PCI interface, using max accessible memory
Oct 27 07:53:57 debian kernel: [    6.568573] radeon 0000:01:05.0: VRAM: 64M 0x000000007C000000 - 0x000000007FFFFFFF (64M used)
Oct 27 07:53:57 debian kernel: [    6.568581] radeon 0000:01:05.0: GTT: 512M 0x0000000080000000 - 0x000000009FFFFFFF
Oct 27 07:53:57 debian kernel: [    6.569323] [drm] Detected VRAM RAM=64M, BAR=128M
Oct 27 07:53:57 debian kernel: [    6.569332] [drm] RAM width 128bits DDR
Oct 27 07:53:57 debian kernel: [    6.569616] [TTM] Zone  kernel: Available graphics memory: 444626 kiB
Oct 27 07:53:57 debian kernel: [    6.569622] [TTM] Zone highmem: Available graphics memory: 1004214 kiB
Oct 27 07:53:57 debian kernel: [    6.569628] [TTM] Initializing pool allocator
Oct 27 07:53:57 debian kernel: [    6.569641] [TTM] Initializing DMA pool allocator
Oct 27 07:53:57 debian kernel: [    6.569701] [drm] radeon: 64M of VRAM memory ready
Oct 27 07:53:57 debian kernel: [    6.569707] [drm] radeon: 512M of GTT memory ready.
Oct 27 07:53:57 debian kernel: [    6.569746] [drm] GART: num cpu pages 131072, num gpu pages 131072
Oct 27 07:53:57 debian kernel: [    6.587847] [drm] radeon: ib pool ready.
Oct 27 07:53:57 debian kernel: [    6.587972] [drm] radeon: 3 quad pipes, 1 z pipes initialized.
Oct 27 07:53:57 debian kernel: [    6.605644] [drm] PCIE GART of 512M enabled (table at 0x0000000034C00000).
Oct 27 07:53:57 debian kernel: [    6.605701] radeon 0000:01:05.0: WB enabled
Oct 27 07:53:57 debian kernel: [    6.605710] [drm] fence driver on ring 0 use gpu addr 0x80000000 and cpu addr 0xf7239000
Oct 27 07:53:57 debian kernel: [    6.605718] [drm] Supports vblank timestamp caching Rev 1 (10.10.2010).
Oct 27 07:53:57 debian kernel: [    6.605723] [drm] Driver supports precise vblank timestamp query.
Oct 27 07:53:57 debian kernel: [    6.605746] [drm] radeon: irq initialized.
Oct 27 07:53:57 debian kernel: [    6.605871] [drm] Loading R300 Microcode
Oct 27 07:53:57 debian kernel: [    6.626288] saa7134 ALSA driver for DMA sound loaded
Oct 27 07:53:57 debian kernel: [    6.626358] saa7134[0]/alsa: saa7134[0] at 0xfddfe000 irq 22 registered as card -1
Oct 27 07:53:57 debian kernel: [    6.661730] [drm] radeon: cp finalized
Oct 27 07:53:57 debian kernel: [    6.661771] radeon 0000:01:05.0: f7195400 unpin not necessary
Oct 27 07:53:57 debian kernel: [    6.663512] [drm] Radeon Display Connectors
Oct 27 07:53:57 debian kernel: [    6.663516] [drm] Connector 0:
Oct 27 07:53:57 debian kernel: [    6.663520] [drm]   VGA
Oct 27 07:53:57 debian kernel: [    6.663527] [drm]   DDC: 0x68 0x68 0x68 0x68 0x68 0x68 0x68 0x68
Oct 27 07:53:57 debian kernel: [    6.663531] [drm]   Encoders:
Oct 27 07:53:57 debian kernel: [    6.663536] [drm]     CRT1: INTERNAL_DAC2
Oct 27 07:53:57 debian kernel: [    6.663540] [drm] Connector 1:
Oct 27 07:53:57 debian kernel: [    6.663544] [drm]   DVI-D
Oct 27 07:53:57 debian kernel: [    6.663548] [drm]   HPD1
Oct 27 07:53:57 debian kernel: [    6.663554] [drm]   DDC: 0x198 0x198 0x19c 0x19c 0x1a0 0x1a0 0x1a4 0x1a4
Oct 27 07:53:57 debian kernel: [    6.663559] [drm]   Encoders:
Oct 27 07:53:57 debian kernel: [    6.663562] [drm]     DFP1: INTERNAL_DVO1
Oct 27 07:53:57 debian kernel: [    6.675572] No connectors reported connected with modes
Oct 27 07:53:57 debian kernel: [    6.675581] [drm] Cannot find any crtc or sizes - going 1024x768
Oct 27 07:53:57 debian kernel: [    6.682234] [drm] fb mappable at 0xD8040000
Oct 27 07:53:57 debian kernel: [    6.682240] [drm] vram apper at 0xD8000000
Oct 27 07:53:57 debian kernel: [    6.682244] [drm] size 3145728
Oct 27 07:53:57 debian kernel: [    6.682248] [drm] fb depth is 24
Oct 27 07:53:57 debian kernel: [    6.682252] [drm]    pitch is 4096
Oct 27 07:53:57 debian kernel: [    6.682399] fbcon: radeondrmfb (fb0) is primary device
Oct 27 07:53:57 debian kernel: [    6.693180] Console: switching to colour frame buffer device 128x48
Oct 27 07:53:57 debian kernel: [    6.702556] fb0: radeondrmfb frame buffer device
Oct 27 07:53:57 debian kernel: [    6.702561] drm: registered panic notifier
Oct 27 07:53:57 debian kernel: [    6.702574] [drm] Initialized radeon 2.16.0 20080528 for 0000:01:05.0 on minor 0
Oct 27 07:53:57 debian kernel: [    8.046068] EXT4-fs (sda3): re-mounted. Opts: (null)
Oct 27 07:53:57 debian kernel: [    8.223826] EXT4-fs (sda3): re-mounted. Opts: errors=remount-ro
Oct 27 07:53:57 debian kernel: [    8.336582] loop: module loaded
Oct 27 07:53:57 debian kernel: [    9.258764] FAT-fs (sda5): utf8 is not a recommended IO charset for FAT filesystems, filesystem will be case sensitive!
Oct 27 07:53:57 debian kernel: [    9.306737] FAT-fs (sda6): utf8 is not a recommended IO charset for FAT filesystems, filesystem will be case sensitive!
Oct 27 07:53:57 debian kernel: [    9.331055] FAT-fs (sda7): utf8 is not a recommended IO charset for FAT filesystems, filesystem will be case sensitive!
Oct 27 07:53:57 debian kernel: [   10.616226] ADDRCONF(NETDEV_UP): eth0: link is not ready
Oct 27 07:53:58 debian kernel: [   12.222717] tg3 0000:02:00.0: eth0: Link is up at 100 Mbps, full duplex
Oct 27 07:53:58 debian kernel: [   12.222728] tg3 0000:02:00.0: eth0: Flow control is on for TX and on for RX
Oct 27 07:53:58 debian kernel: [   12.223068] ADDRCONF(NETDEV_CHANGE): eth0: link becomes ready
Oct 27 07:55:31 debian shutdown[2307]: shutting down for system reboot