Re: [Linux-fbdev-devel] intelfb crash on i845

Sylvain Meyer a écrit :

   You should use video=intelfb:accel=0 (zero). Could you set the "Intel driver Debug Messages" on on your linux kernel config ? You must have the output
intelfb: options: vram = 4, accel = 0, hwcursor = 1, fixed = 0, noinit = 0
or similar in the dmesg output (the important is accel = 0, for sure).
   In this case the hw acceleration is off.

Ok, dmesg says accel = 0.
But chvt 1 gives a black screen, no text at all.
chvt [23456] gives a dirty screen as before.
dmesg attached (2.6.12-rc1-mm1 with CONFIG_FB_INTEL_DEBUG).

By the way, cat /sys/module/intelfb/parameters/accel still says Y.

And cat /sys/module/intelfb/parameters/mode gives the following oops
(I think it is related to CONFIG_FB_INTEL_DEBUG):

c01cc2b2
PREEMPT
Modules linked in: videodev i915 tun ipt_MASQUERADE iptable_nat ipt_state ip_conntrack iptable_filter ip_tables floppy uhci_hcd ehci_hcd
 dm_mod snd_intel8x0 snd_ac97_codec
CPU:    0
EIP:    0060:[<c01cc2b2>]    Not tainted VLI
EFLAGS: 00010297   (2.6.12-rc1-mm1=Macvin)
EIP is at vsnprintf+0x332/0x4d0
eax: f05fc051   ebx: 0000000a   ecx: f05fc051   edx: fffffffe
esi: dc4b4000   edi: 00000000   ebp: ffffffff   esp: dec15ea8
ds: 007b   es: 007b   ss: 0068
Process cat (pid: 3711, threadinfo=dec15000 task=c261ea90)
Stack: db34a480 00000000 00008124 c013dc80 c1389680 0000002c 00000000 c013e4e4
       ffffffff ffffffff 00000000 c14aa400 dc4b4000 00000001 c01cc558 dc4b4000
       23b4c000 c035d872 dec15f04 c012af25 dc4b4000 c035d871 f05fc051 c012b337
Call Trace:
 [<c013dc80>] prep_new_page+0x60/0x70
 [<c013e4e4>] buffered_rmqueue+0xf4/0x1e0
 [<c01cc558>] sprintf+0x28/0x30
 [<c012af25>] param_get_charp+0x25/0x30
 [<c012b337>] param_attr_show+0x27/0x60
 [<c012b5ea>] module_attr_show+0x7a/0xe0
 [<c01965ad>] fill_read_buffer+0x5d/0xa0
 [<c01966ed>] sysfs_read_file+0x2d/0x70
 [<c0159266>] vfs_read+0xb6/0x170
 [<c01595d1>] sys_read+0x51/0x80
 [<c0103235>] syscall_call+0x7/0xb
Code: 00 83 cf 01 89 44 24 24 eb bb 8b 44 24 48 8b 54 24 20 83 44 24 48 04 8b 08 b8 6c 65 35 c0 81 f9 ff 0f 00 00 0f 46 c8 89 c8 eb 06 <
80> 38 00 74 07 40 4a 83 fa ff 75 f4 29 c8 83 e7 10 89 c3 75 20

Regards,
Brice