Messages in this thread | | | Date | Sun, 03 Apr 2005 20:23:05 +1000 | From | Triffid Hunter <> | Subject | Re: Oops in set_spdif_output in i810_audio |
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try turning off your internal modem in bios until someone works out whats going on here
SuD (Alex) wrote: > Hi, i got a new ahtec laptop and i get null pointer oops everytime i > load i810_audio on 2.4 and 2.6 (including 2.6.11.6) kernels. > > *** These are init messages & oops: > i810_audio: Unknown symbol ac97_set_dac_rate > i810_audio: Unknown symbol ac97_release_codec > i810_audio: Unknown symbol ac97_set_adc_rate > i810_audio: Unknown symbol ac97_alloc_codec > i810_audio: Unknown symbol ac97_probe_codec > Intel 810 + AC97 Audio, version 1.01, 04:15:45 Jan 24 2005 > ACPI: PCI interrupt 0000:00:1f.5[B] -> GSI 10 (level, low) -> IRQ 10 > i810: Intel ICH4 found at IO 0x18c0 and 0x1c00, MEM 0xe0100c00 and > 0xe0100800, IRQ 10 > i810: Intel ICH4 mmio at 0xde9f3c00 and 0xdea84800 > i810_audio: Primary codec has ID 0 > i810_audio: Audio Controller supports 6 channels. > i810_audio: Defaulting to base 2 channel mode. > i810_audio: Resetting connection 0 > i810_audio: Connection 0 with codec id 0 > ac97_codec: AC97 Modem codec, id: CXT48 (Unknown) > i810_audio: codec 0 is a softmodem - skipping. > ... > EIP: 0060:[<dec4b172>] Not tainted > EFLAGS: 00010246 (2.6.8-2-686) > EIP is at i810_set_spdif_output+0x22/0x160 [i810_audio] > eax: ffffffff ebx: 00000000 ecx: d9c28400 edx: d9c28400 > esi: 00000000 edi: 00000000 ebp: d6edfb80 esp: d7383e30 > ds: 007b es: 007b ss: 0068 > Process insmod (pid: 3358, threadinfo=d7382000 task=dca643b0) > Stack: 00004461 ffffffce c011c7f4 00000000 d6edfb80 00000000 d6edfc18 > 00000000 > dec4ff9f d6edfb80 ffffffff 00000000 dec51740 d7383e7c dda3c240 > 00000a04 > d9c28400 dec4fdb0 d6edfbb0 d9c28400 00000000 00000001 00000000 > 00000001 > Call Trace: > [<c011c7f4>] release_console_sem+0xc4/0xd0 > [<dec4ff9f>] i810_configure_clocking+0xbf/0x4c0 [i810_audio] > [<dec4fdb0>] i810_ac97_init+0x4a0/0x5d0 [i810_audio] > [<dec5084f>] i810_probe+0x4af/0x690 [i810_audio] > > *** This is my device: > 0000:00:1f.5 Multimedia audio controller: Intel Corp. 82801DB/DBL/DBM > (ICH4/ICH4-L/ICH4-M) AC'97 Audio Controller (rev 03) > Subsystem: QUANTA Computer Inc: Unknown device 0707 > Flags: bus master, medium devsel, latency 0, IRQ 10 > I/O ports at 1c00 [size=256] > I/O ports at 18c0 [size=64] > Memory at e0100c00 (32-bit, non-prefetchable) [size=512] > Memory at e0100800 (32-bit, non-prefetchable) [size=256] > Capabilities: [50] Power Management version 2 > > > *** What happened in set_spdif_output: > struct ac97_codec *codec = state->card->ac97_codec[0]; > // ... for some reason codec is NULL, and then > if(!codec->codec_ops->digital) > // ... oops > > *** Why is that null? > Perhaps it is because the driver thinks that the card is a modem and > releases it. So no codecs are available, but some functions expect at > least one codec to exist. > > if(codec->modem) > { > printk(KERN_WARNING "i810_audio: codec %d is a > softmodem - skipping.\n", ac97_id); > ac97_release_codec(codec); > > And is detected as modem because of this condition (in ac97_codec.c): > /* Check for an AC97 1.0 soft modem (ID1) */ > if(codec->codec_read(codec, AC97_RESET) & 2) > I don't know much about ac97, i also have an ac97 modem. Anybody knows > what is wrong? > > Btw, Alsa snd-intel8x0 driver works, but as many distros still default > to Oss i think this bug should be hunt. > > - > To unsubscribe from this list: send the line "unsubscribe linux-kernel" in > the body of a message to majordomo@vger.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html > Please read the FAQ at http://www.tux.org/lkml/ > - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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