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SubjectRe: Fw: Re: 2.6.11-rc2-mm2
On Tue, Feb 01, 2005 at 10:18:33AM +1100, Benjamin Herrenschmidt wrote:
> On Mon, 2005-01-31 at 06:21 -0500, Joseph Fannin wrote:
> > I'm getting a blank screen with radeonfb on two boxes here as
> > well. One is a beige g3, the other is i386; both have PCI Radeon 7000s
> > with radeonfb non-modular.
> >
> > On the PC I could see the earliest kernel messages in VGA text
> > mode before radeonfb took over and the screen went blank -- no
> > penguin, and the logo is enabled. Booting with radeonfb:off seemed to
> > work except for the module problem in -rc2-mm2:
> >
> > On the ppc box I tried both -rc2-mm1 and -rc2-mm2. Both hung and
> > then rebooted after 3 minutes, so it seems to be panicing somewhere.
> > I backed the massive-radeonfb patch out of -mm2 and radeonfb worked,
> > so I got as far as the module thing again.

> Hrm... indeed, there seem to be a problem, though I can't tell for sure
> what's up now, it just works on all the configs I had a chance to test
> on. Can you try to boot your G3 with serial console so you can see the
> panic message if any ?

Okay, I managed to get this Oops message on ppc, when modprobing a
modular radeonfb. I got a similar backtrace on i386 too (lost it though).

radeonfb_pci_register BEGIN
PCI: Enabling device 0000:00:0e.0 (0086 -> 0087)
aper_base: 88000000 MC_FB_LOC to: 8bff8800, MC_AGP_LOC to: ffff9000
radeonfb (0000:00:0e.0): Found 32768k of DDR 64 bits wide videoram
radeonfb (0000:00:0e.0): mapped 16384k videoram
radeonfb: Found Open Firmware ROM Image
radeonfb: Retreived PLL infos from Open Firmware
radeonfb: Reference=27.00 MHz (RefDiv=12) Memory=183.00 Mhz, System=183.00 MHz
radeonfb: PLL min 12000 max 35000
Starting monitor auto detection...
radeonfb: I2C (port 1) ... not found
radeonfb: I2C (port 2) ... found CRT display
radeonfb: I2C (port 3) ... found CRT display
radeonfb: I2C (port 4) ... not found
head: ATY,RV100ad_A (letter: A, head_no: 0)
analyzing OF properties...
display-type: CRT
head: ATY,RV100ad_A (letter: A, head_no: 1)
radeonfb: I2C (port 3) ... found CRT display
radeonfb: Monitor 1 type CRT found
radeonfb: EDID probed
radeonfb: Monitor 2 type CRT found
radeonfb: EDID probed
Oops: kernel access of bad area, sig: 11 [#1]
NIP: C00F3DD8 LR: DD2AEF48 SP: D8C8BB50 REGS: d8c8baa0 TRAP: 0300 Not tainted
MSR: 00009032 EE: 1 PR: 0 FP: 0 ME: 1 IR/DR: 11
DAR: 00000008, DSISR: 40000000
TASK = c040f1e0[4326] 'modprobe' THREAD: d8c8a000
Last syscall: 128
GPR00: DD2B1950 D8C8BB50 C040F1E0 D8C8BB90 00000000 00000000 D8C8BC2C DD480008
GPR08: FFFFFFFF 00000000 DD2B0000 C00F3DD8 24004482 1001E294 00000000 100013C4
GPR16: 00000000 00000000 00000000 00000000 100013C4 00000000 C0320000 DD2B0000
GPR24: C0320000 D8C8BBD4 DD2B6470 DD2B647C D8C8BB90 DD2B6438 C08C1000 D8DBA000
NIP [c00f3dd8] fb_videomode_to_var+0x0/0x5c
LR [dd2aef48] display_to_var+0x2c/0xb4 [fbcon]
Call trace:
[dd2b1950] fbcon_switch+0x17c/0x4d8 [fbcon]
[c0124f20] redraw_screen+0x13c/0x1e8
[c01288c0] take_over_console+0x400/0x518
[dd2ae3e4] fbcon_takeover+0x98/0xfc [fbcon]
[dd2b31cc] fbcon_fb_registered+0x68/0xc4 [fbcon]
[dd2b3348] fbcon_event_notify+0x6c/0xd8 [fbcon]
[c002bbc0] notifier_call_chain+0x40/0x68
[c00f0ec0] register_framebuffer+0x180/0x198
[dd32e834] radeonfb_pci_register+0x3bc/0x4f0 [radeonfb]
[c00e9990] pci_device_probe_static+0x54/0x84
[c00e99f8] __pci_device_probe+0x38/0x6c
[c00e9a5c] pci_device_probe+0x30/0x5c
[c0137464] driver_probe_device+0x60/0x9c
[c01375d4] driver_attach+0x58/0xbc
[c0137be4] bus_add_driver+0xb0/0x108

Joseph Fannin
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