Hi, since I'm desperate now I hope someone could provide me a hint: I'm using 2.4.19 (although the problem is the same in 2.4.10 and 2.4.18) and AVM's passive ISDN card Fritz!PCI. The card works fine under i4l but since I would need fax services I'm trying to use the capi drivers (fcpci.o and so on) provided by them. I'm able to successfully load all the CAPI modules, like: Oct 22 21:07:01 buffy kernel: CAPI-driver Rev 1.1.4.1: loaded Oct 22 21:07:01 buffy kernel: capifs: Rev 1.1.4.1 Oct 22 21:07:01 buffy kernel: capi20: started up with major 68 Oct 22 21:07:01 buffy kernel: kcapi: capi20 attached Oct 22 21:07:01 buffy kernel: capi20: Rev 1.1.4.2: started up with major 68 (middleware+capifs) Oct 22 21:07:01 buffy kernel: fcpci: AVM FRITZ!Card PCI driver, revision 0.2 Oct 22 21:07:01 buffy kernel: fcpci: (fcpci built on Oct 22 2002 at 20:41:35) Oct 22 21:07:01 buffy kernel: fcpci: Loading... Oct 22 21:07:01 buffy kernel: fcpci: Driver 'fcpci' attached to stack Oct 22 21:07:01 buffy kernel: kcapi: driver fcpci attached Oct 22 21:07:01 buffy kernel: fcpci: Auto-attaching... Oct 22 21:07:01 buffy kernel: PCI: Found IRQ 5 for device 00:12.0 Oct 22 21:07:01 buffy kernel: fcpci: Stack version 3.09-10 Oct 22 21:07:01 buffy kernel: kcapi: Controller 1: fritz-pci attached Oct 22 21:07:01 buffy kernel: kcapi: card 1 "fritz-pci" ready. Oct 22 21:07:01 buffy kernel: fcpci: Loaded. Oct 22 21:07:01 buffy kernel: kcapi: notify up contr 1 Oct 22 21:07:01 buffy kernel: capi: controller 1 up Oct 22 21:07:08 buffy kernel: ISDN subsystem Rev: 1.1.4.1/1.1.4.1/1.1.4.1/1.1.4.1/1.1.4.1/1.1.4.1 loaded (sorry don't have a lsmod output at hand right now) -- but as soon as an application like hylafax tries to use the CAPI interface the system locks up and (new in 2.4.19) the 'Scroll' and 'Caps Lock' Leds blink. I thought it might be something about irq sharing but my ISDN card seems to be happy & alone on #5 (although I'm not absolutely sure) and I disabled all mysterious BIOS options that might trigger bugs in my motherboard (DFI K6BV3+) concerning irq sharing. Any ideas how to investigate further? \Urs +-----------------------------------------------------------------------+ | sitb - IT Beratung | | Phone mobile: +49 179 2945681 | | Urs J. Schürer Phone office: +49 89 72430265 | | Boschetsrieder Str. 8 Fax: +49 89 72430266 | | 81379 München, Germany Email: urs@sitb.de | +-----------------------------------------------------------------------+ - : send the line "unsubscribe linux-net" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html