Hello! The driver for Trident sound cards in 2.4.2-ac20 has functions ali_save_regs() and ali_restore_regs() that are supposed to save and restore the hardware registers over the power management events. ali_restore_regs() restores mixer and channel registers from memory, but it _saves_ the global registers instead of restoring them: ali_registers.global_regs[i] = inl(TRID_REG(card, i*4)); It must be an error (most likely a result of cut-and-paste). Regards, Pavel Roskin - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/