[linux-audio-user] Re-compiling Demudi kernel help please: Digigram VXpocket2

[Hans Fugal]

Your problem is that stock kernels usually use an initrd, but when you
compile by hand you aren't setting up the initrd. You can either grok
initrd, or compile a few more things into the kernel instead of as
modules. Needless to say the latter is by far easier.

You need the appropriate disk drivers (IDE/ATA, for example) and the
appropriate file system(s) compiled in (ext3 for example). 

On Wed, 24 May 2006 at 11:25 +1200, Hamish Low wrote:
> Firstly thanks to Asbjørn, Lee, Tim and others who have given me advice 
> so far.
> 
> I tried using Asbjørn's vanilla kernel but it didn't work as our laptops 
> are different, but your config settings were a good guide.
> 
> I downloaded the source package for 2.6.16
> I did make oldconfig, to use the config already working on my machine 
> (just without the VXpocket support), I tried compiling the kernel as per 
> the instructions on the Demudi page 
> <http://demudi.agnula.org/wiki/Low-latencyKernelBuildingHowto>, and by 
> referencing Asbjørn's config settings
> Lee had written that CONFIG_ISAPNP must be enabled, but this wasn't an 
> option that I could choose in menuconfig, there was just a hyphen beside 
> this option, also this wasn't enabled in Asbjørn's settings which 
> reportedly works.
> 
> but got this error message on reboot
> 
> Kernel panic - not syncing: VFS: Unable to mount root fs on 
> unknown-block(0,0)
> 
> I assume this means I didn't have the exact settings configured for my 
> laptop.
> 
> So then I put the result of lspci -v into http://kmuto.jp/debian/hcl/
> 
> 0000:00:00.0 0600: 8086:3340 (rev 21)
> 0000:00:01.0 0604: 8086:3341 (rev 21)
> 0000:00:1d.0 0c03: 8086:24c2 (rev 03)
> 0000:00:1d.1 0c03: 8086:24c4 (rev 03)
> 0000:00:1d.2 0c03: 8086:24c7 (rev 03)
> 0000:00:1d.7 0c03: 8086:24cd (rev 03)
> 0000:00:1e.0 0604: 8086:2448 (rev 83)
> 0000:00:1f.0 0601: 8086:24cc (rev 03)
> 0000:00:1f.1 0101: 8086:24ca (rev 03)
> 0000:00:1f.5 0401: 8086:24c5 (rev 03)
> 0000:00:1f.6 0703: 8086:24c6 (rev 03)
> 0000:01:00.0 0300: 1002:4e50
> 0000:02:08.0 0200: 8086:1039 (rev 83)
> 0000:02:09.0 0280: 8086:4223 (rev 05)
> 0000:02:0a.0 0607: 1180:0475 (rev b8)
> 0000:02:0a.1 0c00: 1180:0551
> 
> and it requires the intel-agp driver, which reportedly works
> 
> 
> 80863340 	Yes 	Intel Corporation 	82855PM Processor to I/O 
> Controller intel-agp
> 
> in the Configuration Archive I couldn't find any kernel on any architecture 
> where this can be enabled.  
> Anyway then I tried to rebuild the package with initrd, as I got the 
> impression from the Demudi page that though building a fatter kernel, at 
> least my machine would reboot
> unfortunately this couldn't be built because yaird, or intramfs-tools or 
> linux-intramafs-tool were not previously installed, and I don't seem to be 
> able to install them, either with apt-get or synaptic, as some list is 
> locked/unlocked
> 
> so a few questions - can I salvage things at this point or do I have to 
> start over from a fresh install?
> what did I do wrong and how can avoid similar problems happening again?
> am I going about this the right way, should i be using initrd?
> 
> I hadn't got around to installing the VXpocket firmware - though I don't 
> think this was the problem, when booting into the new kernel Alsa couldn't 
> find the soundcard, though I assume it would be solved after the firmware 
> was installed.
> 
> As much as I enjoy re-compiling and re-installing over and over again, I 
> rather be making some music - thanks in advance
> 
> peace
> 
> Hamish
> 
> 
> 
> 
> Send instant messages to your online friends http://au.messenger.yahoo.com 
> 

-- 
Hans Fugal ; http://hans.fugal.net
 
There's nothing remarkable about it. All one has to do is hit the 
right keys at the right time and the instrument plays itself.
    -- Johann Sebastian Bach
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