kernel 2.6.2-rc3-ben1 breaks X11?

[Albrecht Dreß]

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Hi all,

I installed kernel 2.6.2-rc3-ben1 on my YDL 3 G4 Silver, but I wasn't able =
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to get X running with the same configuration which works fine on 2.4.23. A =
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diff of the X11 log for 2.4 and 2.6 shows only smaller differences (mostly =
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addresses) until the lines

(II) Loading sub module "vgahw"
(II) LoadModule: "vgahw"
(II) Loading /usr/X11R6/lib/modules/libvgahw.a
(II) Module vgahw: vendor=3D"The XFree86 Project"
        compiled for 4.3.0, module version =3D 0.1.0
        ABI class: XFree86 Video Driver, version 0.6
(II) RADEON(0): vgaHWGetIOBase: hwp->IOBase is 0x03b0, hwp->PIOOffset is =
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0x0000
(II) RADEON(0): PCI bus 0 card 16 func 0

after which with 2.4 X11 starts to query the video card, whereas with 2.6 =
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it ejects with

(II) UnloadModule: "ati"
(II) UnloadModule: "vgahw"
(II) Unloading /usr/X11R6/lib/modules/libvgahw.a
(II) UnloadModule: "radeon"
(EE) Screen(s) found, but none have a usable configuration.

Fatal server error:
no screens found

The videocard is a

[root@antares root]# lspci -s 00:10.0 -v
00:10.0 VGA compatible controller: ATI Technologies Inc Radeon RV200 QW =20
[Radeon 7500] (prog-if 00 [VGA])
        Subsystem: ATI Technologies Inc Radeon RV200 QW [Radeon 7500]
        Flags: bus master, stepping, 66Mhz, medium devsel, latency 255, =20
IRQ 48
        Memory at 98000000 (32-bit, prefetchable) [size=3D128M]
        I/O ports at 802400 [size=3D256]
        Memory at 90000000 (32-bit, non-prefetchable) [size=3D64K]
        Expansion ROM at 90020000 [disabled] [size=3D128K]
        Capabilities: [58] AGP version 2.0
        Capabilities: [50] Power Management version 2

Under 2.4, the kernel boot messages for the video card are

[root@antares root]# dmesg | grep radeon
Kernel command line: root=3D/dev/hda13 hdc=3Dide-scsi =20
video=3Dradeonfb:1280x1024-24@60
radeonfb: ref_clk=3D2700, ref_div=3D12, xclk=3D20025 from OF
radeonfb: detected DFP panel size from EDID: 1280x1024
radeonfb: ATI Radeon 7500 QW DDR SGRAM 32 MB
radeonfb: DVI port no monitor connected
radeonfb: CRT port DFP monitor connected

Any ideas?

Tia,

	Albrecht.


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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 Albrecht Dre=DF  -  Johanna-Kirchner-Stra=DFe 13  -  D-53123 Bonn (Germany)
       Phone (+49) 228 6199571  -  mailto:albrecht.dress@arcor.de
_________________________________________________________________________

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