Re: 2.6.11-rc5

quoted

It seem to detect the flat panel incorrectly, or the EDID data is bogus,
maybe that's wrecking something in the new modelist management in
fbdev ? It might be causing us to use a bogus mode that itself casues
atyfb to crash. Tried forcing a mode ?

cfb_imageblit(320) dst1 fa51a800 base e0b80000 bitstart 1999a800
fast_imageblit(237) s daea4000 dst1 fa51a800
fast_imageblit(269) j 1 fa51a800 0
Unable to handle kernel paging request at virtual address fa51a800

is bitstart incorrect or is the thing just not (yet) mapped?

It should be all mapped, i suspect the mode set is totally bogus. To
check it, can you enable radeonfb verbose debug ?

radeonfb: Found Intel x86 BIOS ROM Image
radeonfb: Retreived PLL infos from BIOS
radeonfb: Reference=27.00 MHz (RefDiv=60) Memory=133.00 Mhz, System=133.00 MHz
radeonfb: PLL min 12000 max 35000
radeonfb: Monitor 1 type DFP found
radeonfb: EDID probed
radeonfb: Monitor 2 type no found
radeonfb: Assuming panel size 8x1
radeonfb: Can't find mode for panel size, going back to CRT
cfb_imageblit(320) dst1 fa51a800 base e0b80000 bitstart 1999a800
fast_imageblit(237) s daea4000 dst1 fa51a800
fast_imageblit(269) j 1 fa51a800 0
Unable to handle kernel paging request at virtual address fa51a800
 printing eip:
c020f17e
*pde = 00000000
Oops: 0002 [#1]
Modules linked in: ohci1394 ieee1394 radeonfb i2c_algo_bit i2c_core ehci_hcd uhci_hcd capability usbcore
CPU:    0
EIP:    0060:[<c020f17e>]    Tainted: G     U VLI
EFLAGS: 00010282   (2.6.11-rc5-20050225-default)
EIP is at cfb_imageblit+0x57e/0x67c
eax: 00000000   ebx: 00000001   ecx: 00000000   edx: fa51a800
esi: fa51a804   edi: daea4000   ebp: 00000004   esp: dcae9c14
ds: 007b   es: 007b   ss: 0068
Process modprobe (pid: 2080, threadinfo=dcae8000 task=dc4a7550)
Stack: c01110ac 00000001 c0321d60 dcae9c20 dcae9c20 c01303a2 00000001 c03c87a8
       0000000a dae23ca8 c011c783 00000046 00000000 dc202000 00000046 dcae9c64
       c010513d 0000384d dc202290 00000007 c032db20 daea4000 00000000 0000000f
Call Trace:
 [<c01110ac>] smp_local_timer_interrupt+0xc/0x50
 [<c01303a2>] handle_IRQ_event+0x32/0x70
 [<c011c783>] __do_softirq+0x43/0xa0
 [<c010513d>] do_IRQ+0x3d/0x60
 [<c020d790>] soft_cursor+0x190/0x200
 [<c02043cc>] bit_cursor+0x48c/0x4f0
 [<e0b26c01>] radeonfb_prim_fillrect+0xf1/0x120 [radeonfb]
 [<c012043f>] msleep+0x2f/0x40
 [<c01fff28>] fbcon_cursor+0x1a8/0x280
 [<c023ad08>] hide_cursor+0x18/0x30
 [<c023b014>] redraw_screen+0x174/0x200
 [<c01fed4a>] fbcon_prepare_logo+0x39a/0x3a0
 [<c01ff8a0>] fbcon_init+0x2b0/0x370
 [<c023b1a9>] visual_init+0xe9/0x170

-- 
Benjamin Herrenschmidt [off-list ref]