Hello, After searching the archives, I''ve found only two messages regarding this case, but there were no solution. I have a similar problem, so I try to ask here. I have twi HFC chipset ISDN cards in my pc: 0000:00:0d.0 Network controller: Cologne Chip Designs GmbH ISDN network controller [HFC-PCI] (rev 02) Subsystem: Cologne Chip Designs GmbH ISDN Board Flags: bus master, medium devsel, latency 16, IRQ 11 I/O ports at b800 [disabled] [size=8] Memory at de800000 (32-bit, non-prefetchable) [size=256] Capabilities: [40] Power Management version 1 0000:00:0e.0 Network controller: Cologne Chip Designs GmbH ISDN network controller [HFC-PCI] (rev 02) Subsystem: Cologne Chip Designs GmbH ISDN Board Flags: bus master, medium devsel, latency 16, IRQ 3 I/O ports at b400 [disabled] [size=8] Memory at de000000 (32-bit, non-prefetchable) [size=256] Capabilities: [40] Power Management version 1 Note that "I/O ports at b400 [disabled]". Why is it disabled? I''ve downloaded the bristuff driver, and compiled it with "make ARCH=xen". The driver installs correctly, finds the cards, but when I issue the ztcfg command, the domain crashes immidiatly: Zapata Telephony Interface Registered on major 196 PCI: Enabling device 0000:00:0d.0 (0006 -> 0007) PCI: Obtained IRQ 11 for device 0000:00:0d.0 zaphfc: CCD/Billion/Asuscom 2BD0 configured at mem 0xd08b2000 fifo 0xcf048000(0x3b292000) IRQ 11 HZ 100 zaphfc: Card 0 configured for TE mode PCI: Enabling device 0000:00:0e.0 (0006 -> 0007) PCI: Obtained IRQ 3 for device 0000:00:0e.0 zaphfc: CCD/Billion/Asuscom 2BD0 configured at mem 0xd08be000 fifo 0xcf068000(0x3b272000) IRQ 3 HZ 100 zaphfc: Card 1 configured for TE mode zaphfc: 2 hfc-pci card(s) in this box. testvm:~# lsmod Module Size Used by zaphfc 13076 0 zaptel 227332 1 zaphfc crc_ccitt 1728 1 zaptel tulip 50144 0 testvm:~# free total used free shared buffers cached Mem: 256128 27088 229040 0 4252 10720 -/+ buffers/cache: 12116 244012 Swap: 1048568 0 1048568 testvm:~# ztcfg Registered tone zone 3 (Netherlands) testvm:~# zaphfc: bchan rx fifo not enough bytes to receive! (z1=0, z2=0, wanted 8 got 0), probably a buffer overrun. zaphfc: bchan rx fifo not enough bytes to receive! (z1=0, z2=0, wanted 8 got 0), probably a buffer overrun. ************ REMOTE CONSOLE EXITED ***************** The kernel is a 2.6.11.7 with the patches from 2.0-testing xen source. Xen itself is 2.0.5 stable. Can it cause the problem? The kernel is configured as a privileged guest, based on the dom0 config. Here''s the config of this vm: kernel = "/boot/xen/xen-linux-2.6.11-xenu-priv" memory = 256 name = "testvm" nics = 1 ip = "192.168.1.10" gateway = "192.168.1.254" hostname = "testvm" disk = [ ''phy:vg00/testvm,sda1,w'', ''phy:vg00/testvmpv,sdb1,w'' ] root = "/dev/sda1" restart = "onreboot" pci = [ ''0,0d,0'', ''0,0e,0'', ''0,0f,0'' ] Regards, Krisztian Czako _______________________________________________ Xen-devel mailing list Xen-devel@lists.xensource.com http://lists.xensource.com/xen-devel