Usb keyboard keys stop working after 10 minutes on mac mini osx lion

I am using a mid-2010 mac mini with opitical drive, updated to OS X Lion. Within the last two days I noticed a certain section of my wired keyboard eventually stops working. These are the right arrow key, as well as the 1, 2, 3, zero, period and enter keys. The virtual on-screen keyboard works just fine. I've come home from work and powered the mac and all keys work fine for ten minutes so it can't be that the keys are worn. I was going to take it to Apple Store genius bar but now I can't tell if it's the hardware or the lion software that's buggy.

I had terrible problems last year with the USB ports on my 20" display. They were made worse when I installed a USB 2.0 PCI card in my G5.
At the time the advice I got was that I should avoid using the display as a USB hub. Apparently the ports are only intended for devices relating to the display (whatever that means). Ridiculous if you ask me. I succesfully use my Cubase SX dongle in the back of the display but that's all.

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Around the same time when this all began my Battery completely stopped working too, does this have anything to do with it? I've reset my PRAM and no luck.
I'm planning on replacing the keyboard, will that fix the problem? or is it something deeper?
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I didn't update my mediacenter running arch for a few months so I figured i'd reinstall it because of the filesystem, /lib and grub changes. Now after reinstalling I'm running into the issue that my USB audio DAC stops working after a suspend.
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[user@mediacenter ~]$ speaker-test -c 2
speaker-test 1.0.25
Playback device is default
Stream parameters are 48000Hz, S16_LE, 2 channels
Using 16 octaves of pink noise
ALSA lib pcm_dmix.c:1068:(snd_pcm_dmix_open) unable to open slave
Playback open error: -77,File descriptor in bad state
I've tried replugging my DAC and restarting ALSA, without any success. I have to reboot to get sound again.
Output of /var/log/pm-suspend.log
za jul 21 19:20:24 CEST 2012: performing suspend
Initial commandline parameters:
za jul 21 19:22:06 CEST 2012: Running hooks for suspend.
Running hook /usr/lib/pm-utils/sleep.d/00logging suspend suspend:
Linux mediacenter 3.4.6-1-ARCH #1 SMP PREEMPT Fri Jul 20 08:21:26 CEST 2012 x86_64 GNU/Linux
Module Size Used by
rfcomm 33627 0
bluetooth 190551 3 rfcomm
rfkill 15604 1 bluetooth
r8169 49386 0
acpi_cpufreq 5933 0
mperf 1267 1 acpi_cpufreq
snd_usb_audio 93519 2
snd_hwdep 6300 1 snd_usb_audio
snd_usbmidi_lib 18744 1 snd_usb_audio
snd_rawmidi 18479 1 snd_usbmidi_lib
snd_seq_device 5300 1 snd_rawmidi
snd_pcm 74958 2 snd_usb_audio
snd_page_alloc 7217 1 snd_pcm
snd_timer 18966 2 snd_pcm
mei 32152 0
snd 58997 9 snd_usb_audio,snd_hwdep,snd_timer,snd_pcm,snd_rawmidi,snd_usbmidi_lib,snd_seq_device
usb_storage 44760 0
uas 9285 0
i2c_i801 8180 0
microcode 12185 0
iTCO_wdt 12813 0
coretemp 5654 0
iTCO_vendor_support 1929 1 iTCO_wdt
crc32c_intel 1987 0
joydev 9991 0
soundcore 5410 1 snd
mii 4123 1 r8169
firewire_ohci 31677 0
firewire_core 51552 1 firewire_ohci
pcspkr 1899 0
serio_raw 4653 0
processor 26567 1 acpi_cpufreq
crc_itu_t 1363 1 firewire_core
evdev 9754 5
ext4 424175 3
crc16 1359 2 ext4,bluetooth
jbd2 73919 1 ext4
mbcache 5977 1 ext4
sr_mod 14823 0
sd_mod 29239 5
cdrom 35648 1 sr_mod
usbhid 36430 0
hid 85477 1 usbhid
ahci 20549 4
libahci 20023 1 ahci
uhci_hcd 23404 0
pata_jmicron 2480 0
pata_acpi 3408 0
ata_generic 3295 0
ehci_hcd 41026 0
libata 167611 5 ahci,pata_acpi,libahci,ata_generic,pata_jmicron
scsi_mod 132974 5 uas,usb_storage,libata,sd_mod,sr_mod
usbcore 147565 8 uas,uhci_hcd,snd_usb_audio,usb_storage,snd_usbmidi_lib,ehci_hcd,usbhid
usb_common 954 1 usbcore
i915 438144 4
video 11307 1 i915
button 4502 1 i915
i2c_algo_bit 5391 1 i915
intel_agp 10936 1 i915
intel_gtt 14047 3 i915,intel_agp
drm_kms_helper 33051 1 i915
drm 208958 5 i915,drm_kms_helper
i2c_core 20369 5 drm,i915,i2c_i801,drm_kms_helper,i2c_algo_bit
total used free shared buffers cached
Mem: 3721220 336284 3384936 0 16624 156204
-/+ buffers/cache: 163456 3557764
Swap: 265068 0 265068
/usr/lib/pm-utils/sleep.d/00logging suspend suspend: success.
Running hook /usr/lib/pm-utils/sleep.d/00powersave suspend suspend:
/usr/lib/pm-utils/sleep.d/00powersave suspend suspend: success.
Running hook /usr/lib/pm-utils/sleep.d/01grub suspend suspend:
/usr/lib/pm-utils/sleep.d/01grub suspend suspend: success.
Running hook /usr/lib/pm-utils/sleep.d/49bluetooth suspend suspend:
/usr/lib/pm-utils/sleep.d/49bluetooth suspend suspend: success.
Running hook /usr/lib/pm-utils/sleep.d/75modules suspend suspend:
/usr/lib/pm-utils/sleep.d/75modules suspend suspend: success.
Running hook /etc/pm/sleep.d/90alsa suspend suspend:
/etc/pm/sleep.d/90alsa suspend suspend: success.
Running hook /usr/lib/pm-utils/sleep.d/90clock suspend suspend:
/usr/lib/pm-utils/sleep.d/90clock suspend suspend: success.
Running hook /usr/lib/pm-utils/sleep.d/94cpufreq suspend suspend:
/usr/lib/pm-utils/sleep.d/94cpufreq suspend suspend: success.
Running hook /usr/lib/pm-utils/sleep.d/95led suspend suspend:
/usr/lib/pm-utils/sleep.d/95led suspend suspend: success.
Running hook /usr/lib/pm-utils/sleep.d/98video-quirk-db-handler suspend suspend:
Kernel modesetting video driver detected, not using quirks.
/usr/lib/pm-utils/sleep.d/98video-quirk-db-handler suspend suspend: success.
Running hook /usr/lib/pm-utils/sleep.d/99video suspend suspend:
kernel.acpi_video_flags = 0
/usr/lib/pm-utils/sleep.d/99video suspend suspend: success.
za jul 21 19:22:07 CEST 2012: performing suspend
za jul 21 19:22:22 CEST 2012: Awake.
za jul 21 19:22:22 CEST 2012: Running hooks for resume
Running hook /usr/lib/pm-utils/sleep.d/99video resume suspend:
/usr/lib/pm-utils/sleep.d/99video resume suspend: success.
Running hook /usr/lib/pm-utils/sleep.d/98video-quirk-db-handler resume suspend:
/usr/lib/pm-utils/sleep.d/98video-quirk-db-handler resume suspend: success.
Running hook /usr/lib/pm-utils/sleep.d/95led resume suspend:
/usr/lib/pm-utils/sleep.d/95led resume suspend: success.
Running hook /usr/lib/pm-utils/sleep.d/94cpufreq resume suspend:
/usr/lib/pm-utils/sleep.d/94cpufreq resume suspend: success.
Running hook /usr/lib/pm-utils/sleep.d/90clock resume suspend:
/usr/lib/pm-utils/sleep.d/90clock resume suspend: success.
Running hook /etc/pm/sleep.d/90alsa resume suspend:
ALSA lib pcm_dmix.c:1068:(snd_pcm_dmix_open) unable to open slave
aplay: main:682: audio open error: File descriptor in bad state
/etc/pm/sleep.d/90alsa resume suspend: success.
Running hook /usr/lib/pm-utils/sleep.d/75modules resume suspend:
Reloaded unloaded modules.
/usr/lib/pm-utils/sleep.d/75modules resume suspend: success.
Running hook /usr/lib/pm-utils/sleep.d/49bluetooth resume suspend:
/usr/lib/pm-utils/sleep.d/49bluetooth resume suspend: success.
Running hook /usr/lib/pm-utils/sleep.d/01grub resume suspend:
/usr/lib/pm-utils/sleep.d/01grub resume suspend: success.
Running hook /usr/lib/pm-utils/sleep.d/00powersave resume suspend:
/usr/lib/pm-utils/sleep.d/00powersave resume suspend: success.
Running hook /usr/lib/pm-utils/sleep.d/00logging resume suspend:
/usr/lib/pm-utils/sleep.d/00logging resume suspend: success.
za jul 21 19:22:23 CEST 2012: Finished.
Output of aplay -l
[user@mediacenter ~]$ aplay -l
**** List of PLAYBACK Hardware Devices ****
card 0: DAC [USB Audio DAC], device 0: USB Audio [USB Audio]
Subdevices: 0/1
Subdevice #0: subdevice #0
What I'm noticing is that after a suspend "Subdevices: 0/1" gets changed to "Subdevices: 1/1".
Any help is much appreciated!
Last edited by Quaith (2012-07-21 17:33:59)

Odysseus wrote:
Unless you can find a way to stop XBMC from using your DAC, I would try hunting down the update which broke it and file a bug report with the appropriate project. https://wiki.archlinux.org/index.php/Do … g_Packages.
I suspect it would be the kernel.
Yes I am suspecting the kernel as well. I'll try to change some options in XBMC to maybe get this working, and if not I'll see how far I can downgrade with the kernel. My last installation was a few months old so I hope it broke not that long ago.
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Usb keyboard keys stop working after 10 minutes on mac mini osx lion

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