On Thu, Jul 6, 2017 at 7:26 AM, Tore Anderson <[email protected]> wrote: >> The LT4120 might have it's own challenges. The website you are >> referring to does add udev rule to set the configuration of the >> modem, as it seems to be in win8 mode as original, and that the Linux >> system does not seem to cope with very well. > > I just received the replacement lt4120 modem HP sent me and it actually > seems to work quite well - including IPv6 connectivity. The only issue > was that it came up in configuration #2 by default, and in this mode MM > doesn't pick it up. > > After switching it to configuration #3 (MBIM) everything Just Worked > without any further tinkering. I see the blog post author went for > configuration #1 instead, and that looks more cumbersome pull off. > Maybe it has any distinct advantage over MBIM mode he needed, I don't > know. > > Anyway, all I needed was to add a udev rule such as: > > ACTION=="add|change", ATTR{idVendor}=="03f0", ATTR{idProduct}=="9d1d", > ATTR{bConfigurationValue}=="2", ATTR{bConfigurationValue}:="3" > > As I understand it this would not have been necessary for me to do if > Fedora had shipped the latest version of usb_modeswitch, which adds > support for this particular device (switching it to MBIM mode).
Yes, usb_modeswitch should by default switch that one to MBIM mode. Also, see this thread where I play a bit with this device: https://lists.freedesktop.org/archives/libqmi-devel/2017-January/001916.html But please note that the last consensus for the --dms-hp-change-device-mode qmicli option was to limit it to the only value we currently care about, which is "fastboot", enabling firmware update via QMI PDC using abarouski's procedure. -- Aleksander https://aleksander.es _______________________________________________ ModemManager-devel mailing list [email protected] https://lists.freedesktop.org/mailman/listinfo/modemmanager-devel
