2.6.0-test2 does not boot with matroxfb

I can boot a Athlon based PC with a Matrox-G450. It runs well. The frame buffer is broken, and so is X and overlay buffer, but it doesn't crash at all.
I also booted another kernel on the VGA console.
The console is OK, X and overlay buffer are still broken, but the machine euns well.
I have two 2.6.0-test2, one with the matroxfb,
the other one just with the VGA console.

I will check this, I'd like to have more than a VGA console :-)

Jocelyn Mayer <[email protected]>

I played with my PC this week-end.
First I recompiled XFree up to version 4.3.0. It fixed nothing. I found out that the agpgart/dri drivers failed to init:

Clock Driver v1.11 Linux agpgart interface v0.100 (c) Dave Jones

[drm:drm_init] *ERROR*  Cannot  initialize  the  agpgart  module.
Uninitialised  timer!   This is just a warning.  Your computer is
OK function=0x00000000, data=0x0 Call Trace:
 [<c0121a80>] check_timer_failed+0x40/0x50
 [<c0121da5>] del_timer+0x15/0x80
 [<c020e318>] mga_takedown+0x68/0x340
 [<c0211d4d>] mga_stub_unregister+0x2d/0x39
 [<c03d8ca7>] drm_init+0xd7/0x260
 [<c03ca6dd>] do_initcalls+0x3d/0x90
 [<c03ca749>] do_basic_setup+0x19/0x20
 [<c010508f>] init+0x2f/0x180
 [<c0105060>] init+0x0/0x180
 [<c0106f9d>] kernel_thread_helper+0x5/0x18

from dmesg

So, I reccompiled my kernels without agpgart.
Then, I noticed that X was ran in 32 bits mode
but that xwininfo said it was in 8 bits mode.
I relaunched X in 16 bits modes and it runs fine, now, including overlay video.
This is quite strange, because it used to run OK on 2.4 kernels and I got no idea of the source of the problem.
I now run a VGA console kernel without agpgart with a 16bps X.

So, there seems to be two issues:
- broken matrox fb: I lose the synchro when switching from X to fb. fbset configuration is lost when switching consoles.
- X problems maybe related to agpgart bad initialisation for some modes.

Please tell me if I should do more tests to find out where the problems come from.

Regards.

Here's my /proc/pci output, if this can help to find out issues for agpgart sutffs:
PCI devices found:
Bus 0, device 0, function 0:

    Host bridge: Advanced Micro Devic AMD-760 [IGD4-1P] Sy (rev 19).
      Master Capable.  Latency=32.  
      Prefetchable 32 bit memory at 0xc0000000 [0xcfffffff].
      Prefetchable 32 bit memory at 0xd6002000 [0xd6002fff].
      I/O at 0xc000 [0xc003].
  Bus  0, device   1, function  0:
    PCI bridge: Advanced Micro Devic AMD-760 [IGD4-1P] AG (rev 0).
      Master Capable.  Latency=32.  Min Gnt=14.
  Bus  0, device   7, function  0:
    ISA bridge: VIA Technologies, In VT82C686 [Apollo Sup (rev 64).
  Bus  0, device   7, function  1:
    IDE interface: VIA Technologies, In VT82C586/B/686A/B PI (rev 6).
      Master Capable.  Latency=32.  
      I/O at 0xc400 [0xc40f].
  Bus  0, device   7, function  2:
    USB Controller: VIA Technologies, In USB (rev 26).
      IRQ 12.
      Master Capable.  Latency=32.  
      I/O at 0xc800 [0xc81f].
  Bus  0, device   7, function  3:
    USB Controller: VIA Technologies, In USB (#2) (rev 26).
      IRQ 12.
      Master Capable.  Latency=32.  
      I/O at 0xcc00 [0xcc1f].
  Bus  0, device   7, function  4:
    SMBus: VIA Technologies, In VT82C686 [Apollo Sup (rev 64).
      IRQ 9.
  Bus  0, device   8, function  0:
    Ethernet controller: VIA Technologies, In VT86C100A [Rhine] (rev 6).
      IRQ 12.
      Master Capable.  Latency=32.  
      I/O at 0xd000 [0xd07f].
      Non-prefetchable 32 bit memory at 0xd6000000 [0xd600007f].
  Bus  0, device   9, function  0:
    Ethernet controller: Realtek Semiconducto RTL-8139/8139C/8139C (rev
16).
      IRQ 10.
      Master Capable.  Latency=32.  Min Gnt=32.Max Lat=64.
      I/O at 0xd400 [0xd4ff].
      Non-prefetchable 32 bit memory at 0xd6001000 [0xd60010ff].
  Bus  0, device  11, function  0:
    Multimedia video controller: Brooktree Corporatio Bt878 Video
Capture (rev 17).
      IRQ 12.
      Master Capable.  Latency=32.  Min Gnt=16.Max Lat=40.
      Prefetchable 32 bit memory at 0xd6003000 [0xd6003fff].
  Bus  0, device  11, function  1:
    Multimedia controller: Brooktree Corporatio Bt878 Audio Capture (rev
17).
      IRQ 12.
      Master Capable.  Latency=32.  Min Gnt=4.Max Lat=255.
      Prefetchable 32 bit memory at 0xd6004000 [0xd6004fff].
  Bus  0, device  13, function  0:
    FireWire (IEEE 1394): VIA Technologies, In IEEE 1394 Host Contr (rev
70).
      IRQ 11.
      Master Capable.  Latency=32.  Max Lat=32.
      Non-prefetchable 32 bit memory at 0xd6005000 [0xd60057ff].
      I/O at 0xd800 [0xd87f].
  Bus  0, device  15, function  0:
    SCSI storage controller: Tekram Technology Co TRM-S1040 (rev 1).
      IRQ 11.
      Master Capable.  Latency=32.  
      I/O at 0xdc00 [0xdcff].
      Non-prefetchable 32 bit memory at 0xd6006000 [0xd6006fff].

Bus 0, device 17, function 0:
Multimedia audio controller: Creative Labs SB Live! EMU10k1 (rev 7).
IRQ 5.
Master Capable. Latency=32. Min Gnt=2.Max Lat=20. I/O at 0xe000 [0xe01f].
Bus 0, device 17, function 1:
Input device controller: Creative Labs SB Live! MIDI/Game P (rev 7).
Master Capable. Latency=32.
I/O at 0xe400 [0xe407].
Bus 1, device 5, function 0:
VGA compatible controller: Matrox Graphics, Inc MGA G400 AGP (rev
130).

      IRQ 5.
      Master Capable.  Latency=64.  Min Gnt=16.Max Lat=32.
      Prefetchable 32 bit memory at 0xd0000000 [0xd1ffffff].
      Non-prefetchable 32 bit memory at 0xd2000000 [0xd2003fff].
      Non-prefetchable 32 bit memory at 0xd3000000 [0xd37fffff].

Did you also compile in any of the AGP chipset drivers?
You should see another AGP line following the above message. If you built them as modules, make sure you put amd-k7-agp or the like in your /etc/modules to make sure it gets loaded.

Greg, I'm getting quite a few mails which has been people getting bitten by this. We discussed this briefly at OLS, what's the missing piece of the puzzle here, hotplug userspace scripts iirc ?

Dave

 Dave Jones     http://www.codemonkey.org.uk

Yeah, putting a /sbin/hotplug and the agp modules in initramfs so that when the pci device is found during boot, the module will be loaded. I think you might be able to do this with initrd too.

But in reality, it's a user config error :)

thanks,

greg k-h

Here's the agpgart config I used:
all is in the kernel, nothing in a module....

dules in the kernel, not in modules,
as I used to do in 2.4 kernel, which works well for me The configuration I tested was (from my .config file):
CONFIG_AGP=y
# CONFIG_AGP_ALI is not set
# CONFIG_AGP_AMD is not set
# CONFIG_AGP_AMD_8151 is not set
# CONFIG_AGP_INTEL is not set
# CONFIG_AGP_NVIDIA is not set
# CONFIG_AGP_SIS is not set
# CONFIG_AGP_SWORKS is not set CONFIG_AGP_VIA=y
CONFIG_DRM=y
# CONFIG_DRM_TDFX is not set
# CONFIG_DRM_GAMMA is not set
# CONFIG_DRM_R128 is not set
# CONFIG_DRM_RADEON is not set CONFIG_DRM_MGA=y

I guess not, as I don't use modules (and don't want to) for this feature andI don't use any initrd (and never want too)...

What am I missing here ?

Regards.

Jocelyn Mayer <[email protected]>

That'll be 'no' then 8-)
Fix this, and everything should start magickally working.

Dave

 Dave Jones     http://www.codemonkey.org.uk

Ooops... So sorry, I've been caught like a newby, this time ! I though that was VIA chipset... I just checked what I used to do on 2.4 kernels, and I did use CONFIG_AGP_AMD... So I got no excuse...

Many thanks to you !

Jocelyn Mayer <[email protected]>