Hi All, I tried to suspend the system, and got the following messages: PM: Syncing filesystems ... done. Freezing user space processes ... (elapsed 0.00 seconds) done. Freezing remaining freezable tasks ... (elapsed 0.00 seconds) done. Suspending console(s) (use no_console_suspend to debug) musb_bus_suspend 2261: trying to suspend as a_host while active pm_op(): usb_dev_suspend+0x0/0x8 returns -16 PM: Device usb1 failed to suspend: error -16 PM: Some devices failed to suspend Restarting tasks ... Segmentation fault done. I use linux-omap-2.6.git, should I use the branch linux-omap-pm? Thanks. Wending Weng Software Engineer at Rheinmetall -- To unsubscribe from this list: send the line "unsubscribe linux-omap" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html