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Re: 2.6.5-rc3-ben0 freezes on old iBook

The video chip of my iBook is a mach64; below the lpsci output

0000:00:10.0 VGA compatible controller: ATI Technologies Inc Rage
Mobility L AGP 2x (rev 64) (prog-if 00 [VGA])
        Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop-
ParErr- Stepping+ SERR- FastB2B-
        Status: Cap+ 66MHz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort-
<TAbort- <MAbort- >SERR- <PERR-
        Latency: 255 (2000ns min), Cache Line Size: 0x08 (32 bytes)
        Interrupt: pin A routed to IRQ 48
        Region 0: Memory at 91000000 (32-bit, non-prefetchable)
        Region 1: I/O ports at 802400 [size=256]
        Region 2: Memory at 90000000 (32-bit, non-prefetchable) [size=4K]
        Expansion ROM at 00020000 [disabled]
        Capabilities: [50] AGP version 1.0
                Status: RQ=256 Iso- ArqSz=0 Cal=0 SBA+ ITACoh- GART64-
HTrans- 64bit- FW- AGP3- Rate=x1,x2
                Command: RQ=1 ArqSz=0 Cal=0 SBA- AGP- GART64- 64bit- FW-
        Capabilities: [5c] Power Management version 1
                Flags: PMEClk- DSI- D1+ D2+ AuxCurrent=0mA
                Status: D0 PME-Enable- DSel=0 DScale=0 PME-

After disabling those options, my screen turns blank, but my iBook is
booting "normally"...

I noticed some differences in /var/log/messages
## 2.6.2-ben1
atyfb: 3D RAGE Mobility (AGP) [0x4c4e rev 0x64] 4M WRAM, 14.31818 MHz
XTAL, 230 MHz PLL, 50 Mhz MCLK

## 2.6.5-rc3-ben0
atyfb: 3D RAGE Mobility L (AGP 2x) [0x4c4e rev 0x64] 4M WRAM, 14.31818
MHz XTAL, 230 MHz PLL, 83 Mhz MCLK, 125 MHz XCLK
# and later
atyfb(aty_set_pll_ct): setting clock 3 for FeedBackDivider 173,
ReferenceDivider 31, PostDivider 2(4)

Thanks for helping me


Benjamin Herrenschmidt wrote:
> On Wed, 2004-04-21 at 00:58, Arnaud FONTAINE wrote:
>>I've successfully compiled the 2.6.5-rc3-ben0 kernel on my iBook SE (the
>>shell), but when booting it freezes after writing
>>openpic : exit
> I'm not sure which model of video chip you have precisely, a mach64 (Rage M1)
> or a rage128 mobility (Rage M3) ? (There have been clamshell revs of
> the iBook with both)
> In any case, you should _NOT_ enable these options:
> CONFIG_FB_ATY_GENERIC_LCD=y        # this option is new

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