latest update of xserver-xorg-core fails PCI scan

Binary package hint: xserver-xorg-core

Hi

After a fresh install of kubuntu 6.06.1 without problems, performing the available update of xserver-xorg-core makes X unable to restart. (no devices found / no screens found)

With the update, I get this line before the PCI scan in /var/log/Xorg.0.log :

(II) PCI: Found 0 domains.

and the list of PCI devices includes all PCI:00:xxxxx cards but doesn't include the PCI 1:0:0 card :

(II) PCI: 01:00:0: chip 10de,031a card 104d,814f rev a1 class 03,00,00 hdr 00

which is my nvidia card. hence X is unable to start.

same problem with drivers nv / nvidia / vesa. I have BusID "PCI:1:0:0" in xorg.conf

lspci always lists the card :

0000:01:00.0 VGA compatible controller: nVidia Corporation NV31M [GeForce FX Go5600] (rev a1) (prog-if 00 [VGA])
        Subsystem: Sony Corporation: Unknown device 814f
        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: 40 (1250ns min, 250ns max)
        Interrupt: pin A routed to IRQ 225
        Region 0: Memory at d5000000 (32-bit, non-prefetchable) [size=16M]
        Region 1: Memory at e0000000 (32-bit, prefetchable) [size=256M]
        Capabilities: [60] Power Management version 2
                Flags: PMEClk- DSI- D1- D2- AuxCurrent=0mA PME(D0-,D1-,D2-,D3hot-,D3cold-)
                Status: D0 PME-Enable- DSel=0 DScale=0 PME-
        Capabilities: [44] AGP version 3.0
                Status: RQ=32 Iso- ArqSz=0 Cal=3 SBA+ ITACoh- GART64- HTrans- 64bit- FW+ AGP3+ Rate=x4,x8
                Command: RQ=1 ArqSz=0 Cal=0 SBA- AGP- GART64- 64bit- FW- Rate=<none>

(so does scanpci, so does /proc/bus/pci/01/...)

so maybe the PCI scan is broken in newest xserver-xorg-core.

I had to block updates to be able to use my kubuntu :-/ I'd appreciate any bugfix / help.

Thanks !