Hi there, I've been trying to get UMTS working through the Sierra chip in my Thinkpad X60s and for some reason, the USB subsystem in F8 TestN and Rawhide clocks that I have the Sierra chip, configures it (udev creates /dev/ttyUSB[0-2]) and then immediately disconnects the device, meaning I no longer see it in lsusb output etc. This was not the case in F7. I've tried reverting the Sierra driver to version 1.0.6 (known to work on RHEL5), to no avail, and I've also tried booting with usbcore.autosuspend=0 and usbcore.autosuspend=-1. Neither improves the situation. In /var/log/messages I get the following snippet around when sierra is loaded; --- Oct 7 12:44:02 iota kernel: usbcore: registered new interface driver hci_usb Oct 7 12:44:02 iota kernel: drivers/usb/serial/usb-serial.c: USB Serial support registered for Sierra USB modem (1 port) Oct 7 12:44:02 iota kernel: drivers/usb/serial/usb-serial.c: USB Serial support registered for Sierra USB modem (3 port) Oct 7 12:44:02 iota kernel: sierra 3-1:1.0: Sierra USB modem (3 port) converter detected Oct 7 12:44:02 iota kernel: usb 3-1: Sierra USB modem (3 port) converter now attached to ttyUSB0 Oct 7 12:44:02 iota kernel: usb 3-1: Sierra USB modem (3 port) converter now attached to ttyUSB1 Oct 7 12:44:02 iota kernel: usb 3-1: Sierra USB modem (3 port) converter now attached to ttyUSB2 Oct 7 12:44:02 iota kernel: usbcore: registered new interface driver sierra Oct 7 12:44:02 iota kernel: /root/sierra.v.1.0.6/sierra.c: USB Driver for Sierra Wireless USB modems: v.1.0.6 Oct 7 12:44:02 iota kernel: iTCO_vendor_support: vendor-support=0 Oct 7 12:44:02 iota kernel: sdhci: Secure Digital Host Controller Interface driver Oct 7 12:44:02 iota kernel: sdhci: Copyright(c) Pierre Ossman Oct 7 12:44:02 iota kernel: sdhci: SDHCI controller found at 0000:15:00.2 [1180:0822] (rev 18) Oct 7 12:44:02 iota kernel: ACPI: PCI Interrupt 0000:15:00.2[C] -> GSI 18 (level, low) -> IRQ 23 Oct 7 12:44:02 iota kernel: mmc0: SDHCI at 0xe4301800 irq 23 DMA Oct 7 12:44:02 iota kernel: iTCO_wdt: Intel TCO WatchDog Timer Driver v1.02 (26-Jul-2007) Oct 7 12:44:02 iota kernel: iTCO_wdt: Found a ICH7-M TCO device (Version=2, TCOBASE=0x1060) Oct 7 12:44:02 iota kernel: usb 3-1: USB disconnect, address 2 Oct 7 12:44:02 iota kernel: sierra3 ttyUSB0: Sierra USB modem (3 port) converter now disconnected from ttyUSB0 Oct 7 12:44:02 iota kernel: sierra3 ttyUSB1: Sierra USB modem (3 port) converter now disconnected from ttyUSB1 Oct 7 12:44:02 iota kernel: sierra3 ttyUSB2: Sierra USB modem (3 port) converter now disconnected from ttyUSB2 Oct 7 12:44:02 iota kernel: sierra 3-1:1.0: device disconnected --- Can someone let me know how I can debug this so that this will work in F8 when it is released? Thanks! -- Anders Karlsson <anders@xxxxxxxxxxxxxx> All-Round Linux Tinkerer & RHCE -- fedora-devel-list mailing list fedora-devel-list@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/fedora-devel-list