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Hello gentoo-users, |
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|
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I've got a Samsung laptop with Intel HDA sound card (Realtek ALC269VB ) |
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Yesterday I updated software (it was about a month old; I did a eix-sync |
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and emerge -Du @world) and somehow sound disappeared: the kernel module |
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(snd-hda-intel) still loads and the devices get detected (the |
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aforementioned Realtek codec and HDMI codecs). alsa-mixer also seems to |
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function. At least, it shows the sound card and allows to change volume |
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levels. (in /sys there are also entries for sound/card0) |
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But in KDE, the Kmix complains of the device not working, mpg123 says |
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cannot find card 0, etc. |
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Before the update, everything worked, the kernel version was 3.7.0. I |
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even installed kernels 3.7.4, 3.6.11, with many combinations of |
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HDA-related options and module parameters, all in vain, now I installed |
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3.7.4 with ultra-verbose DEBUG enabled for ALSA and that's what I'm getting: |
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|
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=== BEGIN /var/log/messages === |
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snd_hda_intel 0000:00:1b.0: irq 43 for MSI/MSI-X |
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ALSA sound/pci/hda/hda_intel.c:3150 chipset global capabilities = 0x4401 |
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ALSA.... (many similar messages) |
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input: HDA Intel MID Mic as |
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/devices/pci0000:00/0000:00:1b.0/sound/card0/input8 |
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input: HDA Intel MID Headphone as |
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/devices/pci0000:00/0000:00:1b.0/sound/card0/input9 |
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BUG: unable to handle kernel NULL pointer dereference at 0000000000000005 |
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IP: [<ffffffff811dd420>] strcmp+0x10/0x30 |
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PGD 119028067 PUD 119029067 PMD 0 |
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Oops: 0000 [#1] PREEMPT SMP |
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...(registers dump)... |
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Call Trace: |
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[<ffffffffa00473d6>] card_id_ok.part.5+0x46/0x80 [snd] |
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[<ffffffffa00475fb>] snd_card_set_id_no_lock+0xeb/0x150 [snd] |
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[<ffffffffa0047725>] snd_card_register+0xc5/0x290 [snd] |
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[<ffffffffa0138a29>] azx_probe_continue+0xa4/0x159 [snd_hda_intel] |
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[<ffffffffa0138e81>] azx_probe+0xd9/0x116 [snd_hda_intel] |
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[<ffffffff811fb319>] pci_device_probe+0x79/0xb0 |
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[<ffffffff8126aa4a>] ? driver_sysfs_add+0x7a/0xb0 |
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[<ffffffff8126abdc>] really_probe+0x5c/0x210 |
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[<ffffffff8126ae9d>] driver_probe_device+0x1d/0x20 |
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[<ffffffff8126af3b>] __driver_attach+0x9b/0xa0 |
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[<ffffffff8126aea0>] ? driver_probe_device+0x20/0x20 |
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[<ffffffff8126922e>] bus_for_each_dev+0x4e/0x80 |
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[<ffffffff8126a859>] driver_attach+0x19/0x20 |
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[<ffffffff8126a410>] bus_add_driver+0x180/0x270 |
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[<ffffffffa010c000>] ? 0xffffffffa010bfff |
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[<ffffffff8126b455>] driver_register+0x75/0x150 |
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[<ffffffffa010c000>] ? 0xffffffffa010bfff |
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[<ffffffff811fa3b3>] __pci_register_driver+0x43/0x50 |
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[<ffffffffa010c01e>] azx_driver_init+0x1e/0x1000 [snd_hda_intel] |
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[<ffffffff810001fa>] do_one_initcall+0x3a/0x160 |
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[<ffffffff81088bf9>] sys_init_module+0xb9/0x220 |
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[<ffffffff813bf392>] system_call_fastpath+0x16/0x1b |
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... |
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---[ end trace d00fdb0cd6665b52 ]--- |
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=== END /var/log/messages === |
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|
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As one can see, the line |
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> BUG: unable to handle kernel NULL pointer dereference |
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indicates a bug, doesn't it? |
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|
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If it is a bug, what should I do? |
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|
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(I have ~amd64 in keywords, pulseaudio is disabled, alsa enabled in USE |
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flags) |
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|
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Strangely enough, I've got another laptop (a little newer model of |
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Samsung), also with Realtek, and there the software update didn't cause |
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any problems. |
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|
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Thanks in advance for any ideas. |
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|
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-- |
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Best wishes, |
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Yuri K. Shatroff |
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