Re: [atyfb] No display on Sparc Ultra 10 with kernel 2.6.10-rc2 or later

On Tuesday 15 February 2005 01:55, Frans Pop wrote:

Hello Tony,

Thanks for your reaction.

On Monday 14 February 2005 17:59, Antonino A. Daplas wrote:

quoted

The above timings are screwed.  This is 1024x768 at 85Hz INTERLACED.
The fb_find_mode() function picked up this mode when you specified
1024x768@75, since there is no such mode in the mode database.
And the atyfb driver accepted the mode without differentiating between
interlaced and non-interlaced.

Right. I tried with 1024x768@70 and that gives some improvement.
For a very, very short time I see the Linux logo and some boot messages
flash on the display, but then the monitor still goes into suspend.

It really is just a flash, but I think I see some of the atyfb debug
messages. That would indicate that the suspend is activated somewhere near
the end of console initialization (maybe at the "switching to colour frame
buffer device 128x48"?). But again, this is based on an impression.

So it seems there are two bugs:
- missing/incorrect default mode settings for sparc in the driver;
- incorrect activation of suspend.

Try editing drivers/video/console/fbcon.c, look for the function
fbcon_startup(). After the line 'ops->currcon = -1;', insert this line:

ops->blank_state = -1;

Also, try changing the graphics state such as doing an
fbset -depth 16 or the like.

What happens if you switch consoles?

You can also try commenting out .fb_blank = atyfb_blank from
static struct fb_ops atyfb_ops and disable CONFIG_PM from your kernel
config.

quoted

PS:  There was also a massive atyfb update between 2.6.10-rc1 and rc2.
Here's the changelog:

How best to proceed? Can you help?

I'll CC fbdev-devel list.

Cheers,
Frans Pop

Tony

For comparison, here are the relevant lines from kern.log when
booting with a Debian 2.6.8 kernel:
atyfb: 3D RAGE (GT) [0x4754 rev 0x9a] 2M SGRAM, 14.31818 MHz XTAL, 200 MHz
PLL, 67 Mhz MCLK fb0: ATY Mach64 frame buffer device on PCI
Console: switching to mono PROM 80x34
Console: switching to colour frame buffer device 144x56

And here the lines from 2.6.10-rc2 with video=atyfb:1024x768@70:
atyfb: 3D RAGE (Mach64 GT) [0x4754 rev 0x02]
atyfb: 2M SGRAM (1:1), 14.31818 MHz XTAL, 200 MHz PLL, 67 Mhz MCLK, 67 MHz
XCLK atyfb: setting up CRTC
atyfb: set primary CRT to 1024x768 NN composite N
atyfb: CRTC_H_TOTAL_DISP: 7f00a5
atyfb: CRTC_H_SYNC_STRT_WID: 310082
atyfb: CRTC_V_TOTAL_DISP: 2ff0325
atyfb: CRTC_V_SYNC_STRT_WID: 260302
atyfb: CRTC_OFF_PITCH: 20000000
atyfb: CRTC_VLINE_CRNT_VLINE: 0
atyfb: CRTC_GEN_CNTL: b000200
atyfb: atyfb_set_par
atyfb:  Set Visible Mode to 1024x768-8
atyfb:  Virtual resolution 1024x2016, pixclock_in_ps 13373 (calculated
13373) atyfb:  Dot clock:           74 MHz
atyfb:  Horizontal sync:     56 kHz
atyfb:  Vertical refresh:    69 Hz
atyfb:  x  style: 74.10398 1024 1048 1184 1328   768 771 777 806
atyfb:  fb style: 13373  144 1024 24 136 29 768 3 6
debug atyfb: Mach64 non-shadow register values:
debug atyfb: 0x2000:  007F00A5 00310082 02FF0325 00260302
debug atyfb: 0x2010:  01AA0000 20000000 08000020 0B000200
debug atyfb: 0x2020:  00380727 0120051B 00000000 00000000
debug atyfb: 0x2030:  00000000 00000031 00000000 00000000
debug atyfb: 0x2040:  00000000 00000000 00000000 00000000
debug atyfb: 0x2050:  00000000 00000000 00000000 00000000
debug atyfb: 0x2060:  00000000 AAAAAA0F 00000000 00000000
debug atyfb: 0x2070:  00000000 00000000 00003020 00000000
debug atyfb: 0x2080:  00000000 00000000 00000000 00000000
debug atyfb: 0x2090:  00A63000 00000000 00000000 00000000
debug atyfb: 0x20A0:  7B23A040 00000000 00000000 05000001
debug atyfb: 0x20B0:  004210B3 00010000 00010000 00000000
debug atyfb: 0x20C0:  00FF0000 86010182 00000000 00000000
debug atyfb: 0x20D0:  00000100 00000000 00000000 00003842
debug atyfb: 0x20E0:  9A004754 0000001D 00000000 00000000
debug atyfb: 0x20F0:  00000000 00008E0D E17FFCF8 00000000

debug atyfb: Mach64 PLL register values:
debug atyfb: 0x00:  CDD52414 A80341BC 8E82E701 A61B0000
debug atyfb: 0x10:  CDD52414 A80341BC 8E82E701 A61B0000
debug atyfb: 0x20:  CDD52414 A80341BC 8E82E701 A61B0000
debug atyfb: 0x30:  CDD52414 A80341BC 8E82E701 A61B0000

Console: switching to colour frame buffer device 128x48
atyfb: fb0: ATY Mach64 frame buffer device on PCI