PPC下的dapper没有声音，启动后立即休眠后，就有了！大家帮忙看看log!

chgtg

我在iBook G4上装了dapper，启动后没有声音，硬件检查一切正常，包括alsamixer都是正常的。媒体播放软件工作正常，就是没有声音。

uname -a
Linux ubuntu 2.6.15-16-powerpc #1 Mon Feb 20 19:00:33 UTC 2006 ppc GNU/Linux

下面是休眠后的日志中的一部分，大家帮忙看一下：

Mar  5 08:46:36 localhost kernel: [  633.154295] hci_usb 1-1:1.1: no suspend for driver hci_usb?
Mar  5 08:46:36 localhost kernel: [  633.154966] hci_usb 1-1:1.0: no suspend for driver hci_usb?
Mar  5 08:46:36 localhost kernel: [  633.155844] failed to set volume
Mar  5 08:46:38 localhost kernel: [  634.733927] eth0: suspending, WakeOnLan disabled
Mar  5 08:46:38 localhost kernel: [  634.843214] radeonfb (0000:00:10.0): suspending to state: 2...
Mar  5 08:46:38 localhost kernel: [  634.915644] Disabling clock spreading on Intrepid ASIC
Mar  5 08:46:39 localhost kernel: [  635.224943] radeonfb (0000:00:10.0): resuming from state: 2...
Mar  5 08:46:39 localhost kernel: [  635.224977] PCI: Enabling device 0000:00:10.0 (0000 -> 0003)
Mar  5 08:46:39 localhost kernel: [  636.092352] Enabling clock spreading on Intrepid ASIC
Mar  5 08:46:39 localhost kernel: [  636.132820] PCI: Enabling device 0001:10:12.0 (0000 -> 0002)
Mar  5 08:46:39 localhost kernel: [  636.154636] PCI: Enabling device 0001:10:1b.0 (0000 -> 0002)
Mar  5 08:46:39 localhost kernel: [  636.170697] PCI: Enabling device 0001:10:1b.1 (0000 -> 0002)
Mar  5 08:46:39 localhost kernel: [  636.186667] PCI: Enabling device 0001:10:1b.2 (0000 -> 0002)
Mar  5 08:46:40 localhost kernel: [  637.210169] eth0: resuming
Mar  5 08:46:40 localhost kernel: [  637.274917] PHY ID: 4061e4, addr: 0
Mar  5 08:46:41 localhost kernel: [  638.298046] hda: Enabling Ultra DMA 5
Mar  5 08:46:41 localhost kernel: [  638.302633] hdc: Enabling MultiWord DMA 2
Mar  5 08:46:42 localhost kernel: [  638.577577] appletouch: incomplete data package.
Mar  5 08:46:46 localhost kernel: [  638.998594] hci_usb 1-1:1.0: no resume for driver hci_usb?
Mar  5 08:46:46 localhost kernel: [  638.999262] hci_usb 1-1:1.1: no resume for driver hci_usb?
Mar  5 08:46:47 localhost kernel: [  639.044503] adb: starting probe task...
Mar  5 08:46:47 localhost kernel: [  639.067977] adb devices: [2]: 2 c3 [7]: 7 1f
Mar  5 08:46:47 localhost kernel: [  639.072805] ADB keyboard at 2, handler 1
Mar  5 08:46:47 localhost kernel: [  639.073278] adb: finished probe task...
Mar  5 08:46:47 localhost kernel: [  639.674720] eth0: Link is up at 100 Mbps, full-duplex.
Mar  5 08:46:47 localhost kernel: [  639.674736] eth0: Pause is disabled

休眠后，合上显示器，然后打开（停止休眠），看到喇叭的图标变成静音状态，取消静音，就可以听到声音了！不明白是怎么回事，也无法提交bug，请大家帮忙看看这段日志，到底是什么原因引起的没有声音呢？为什么休眠一次后就可以听到声音了呢？
谢谢！