[Xen-devel] Device-Drivers in dom0

[Björn Sessler <bjoern.sessler@xxxxxx>]

Am Donnerstag, 5. August 2004 06:18 schrieb

> one question to new io-world:
> using my avm fritz card (isdn-device) works really great in dom0 (gentoo).
> but i have problems using alsa with my onboard via-82xx in dom0 with kernel
> 2.4-xen0. i'm getting an oops when trying modprobe. i will send u the log
> and displayed messages later, i want to try out how it works with an
> umodified 2.4 kernel first. i decided that i have to contribute more to
> this really great project, since i noticed that the gentoo-xen0 is my only
> working linux system at the moment, it's really stable ;-) good work!!!

hi again,

now i've checked with an unmodified 2.4 kernel and sound was ok. with the 2.4 
xen0 kernel following happens when trying to start alsa after the alsa-driver 
was installed (with same xen0 kernel, sound-module was compiled in before and 
doesn't make problems without the alsa-drivers installed). after the oops 
i've to delete all xen0 modules in /lib/modules and install new to avoid 
crashes when logging in as non-root (don't know why, alsa is not started 
automatically and shouldn't be initialised when logging in as normal user). 
once crashed, theres no chance to use other pci-devices like the described 
isdn-card. the system will freeze when i'm trying to start a connection.

regards,
björn

/var/log/messages after /etc/init.d/alsasound start (shown on console when 
logging in as normal, non-root user):

Aug  5 13:11:09 vm0 modprobe: modprobe: Can't locate module snd-seq-client-62
Aug  5 13:11:09 vm0 PCI: Obtained IRQ 11 for device 00:11.5
Aug  5 13:11:09 vm0 PCI: Setting latency timer of device 00:11.5 to 64
Aug  5 13:11:09 vm0 Unable to handle kernel NULL pointer dereference at 
virtual address 0000001b
Aug  5 13:11:09 vm0 printing eip:
Aug  5 13:11:09 vm0 d063effa
Aug  5 13:11:09 vm0 *pde=00000000(55555000)
Aug  5 13:11:09 vm0 Oops: 0000
Aug  5 13:11:09 vm0 CPU:    0
Aug  5 13:11:09 vm0 EIP:    0819:[<d063effa>]    Tainted: P
Aug  5 13:11:09 vm0 EFLAGS: 00213246
Aug  5 13:11:09 vm0 eax: 00000000   ebx: 00000000   ecx: 000009a0   edx: 
01366000
Aug  5 13:11:09 vm0 esi: 00000000   edi: d0668000   ebp: c3714280   esp: 
c1fe9db0
Aug  5 13:11:09 vm0 ds: 0821   es: 0821   ss: 0821
Aug  5 13:11:09 vm0 Process modprobe (pid: 6260, stackpage=c1fe9000)<1>
Aug  5 13:11:09 vm0 Stack: d0668000 00010000 00000000 c3714280 00010000 
ccfd9ee4 00000010 d063f2e6
Aug  5 13:11:09 vm0 c3714280 d0668000 00000010 c71c2d20 00000020 00000080 
ccfd9ee4 00010000
Aug  5 13:11:09 vm0 ccfd9ed8 00020000 d063e54f ccfd9ed8 00010000 ccfd9ee4 
00000000 00010000
Aug  5 13:11:09 vm0 Call Trace: [<d063f2e6>] [<d063e54f>] [<d064d7b0>] 
[<d064db17>] [<d064dc04>]
Aug  5 13:11:09 vm0 [<d0662320>] [<d0663845>] [<d066423c>] [<d0664680>] 
[<c027bfb5>] [<d066423c>]
Aug  5 13:11:09 vm0 [<d0664680>] [<c027c05c>] [<d0664680>] [<d0663a63>] 
[<d0664680>] [<c010a500>]
Aug  5 13:11:09 vm0 [<d0664160>] [<d0661060>] [<c01f5963>]
Aug  5 13:11:09 vm0
Aug  5 13:11:11 vm0 rc-scripts: No mixer config in /etc/asound.state, you have 
to unmute your card!


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