On Fri, Dec 16, 2011 at 9:52 AM, Jonathan Polom <span dir="ltr"><<a href="mailto:jon@spkr.net">jon@spkr.net</a>></span> wrote:<br><div class="gmail_quote"><blockquote class="gmail_quote" style="margin:0pt 0pt 0pt 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">
<div class="HOEnZb"><div class="h5">On Fri, Dec 16, 2011 at 9:43 AM, Jon Meek <<a href="mailto:meekjt@gmail.com">meekjt@gmail.com</a>> wrote:<br>
> On Fri, Dec 16, 2011 at 8:48 AM, Jonathan Polom <<a href="mailto:jon@spkr.net">jon@spkr.net</a>> wrote:<br>
>><br>
>> I just started using Voyage MPD last week and quite like it, except<br>
>> for one flaw I've found: building kernel modules for proprietary<br>
>> drivers. The only problem I'm having (and this is not a voyage issue,<br>
>> I had the same problem when I ran Debian stable) is that my wired NIC,<br>
>> which is a lovely Realtek 8111/8168 series controller, uses the<br>
>> problematic r8169 kernel module. The r8169 module is effectively broke<br>
>> for my NIC and causes it to up/down the link randomly and drop a lot<br>
>> of incoming packets. Obviously this is not acceptable and I need to<br>
>> fix it. The accepted fix at this time is to use the r8168 module<br>
>> provided by Realtek. Realtek provides the "source" for this driver on<br>
>> their web site to be compiled as a kernel module and there's also an<br>
>> r8168-dkms package in the Debian sid repos.<br>
>><br>
>> So far I've had no success compiling the r8168 module from the Realtek<br>
>> tarball or from the DKMS package out of sid (all deps are satisfied<br>
>> for that package). I've installed the kernel source for the<br>
>> 3.0.0-voyage kernel, untarred it to /usr/src/linux-source-3.0.0-voyage<br>
>> and symlinked /usr/src/linux to it, but DKMS consistently claims that<br>
>> it doesn't think the source for the kernel is installed when I run<br>
>> `dpkg-reconfigure r8168-dkms`. I've tried compiling the module<br>
>> directly from the Realtek source via their autorun.sh script, but it<br>
>> looks in /lib/modules/3.0.0-voyage/build for something that isn't<br>
>> there (not too sure what *should* be there even, I've tried symlinking<br>
>> the kernel sources there but that doesn't work either). I've never had<br>
>> this much trouble trying to compile a kernel module before, especially<br>
>> in Debian.<br>
>><br>
>> I searched my configured apt repos (squeeze, sid and voyage) for<br>
>> available kernel headers and couldn't find one for the voyage kernel<br>
>> (why isn't one available by default? that seems odd, especially so<br>
>> since you're offering a kernel source package) since you really don't<br>
>> need the full source tree available to compile a module in most cases.<br>
>> I did find what looks like a kernel headers package in the voyage<br>
>> experimental repository for the 3.0.0-voyage kernel. But I have to<br>
>> ask: why is the headers package for the default voyage kernel<br>
>> considered experimental? Will that package allow me to compile modules<br>
>> against the headers it contains or are there some known issues with<br>
>> it?<br>
>><br>
>> So my main question here is: How is one supposed to compile a third<br>
>> party/out-of-tree kernel module on voyage for the voyage kernel?<br>
>><br>
>> Any help is appreciated on this topic.<br>
>><br>
>> Jon<br>
>><br>
><br>
> This is how I compiled the e1000e driver from Intel's tarball for<br>
> Voyage 0.7.5. Note that this was done to fix an auto-negotiation<br>
> problem that was actually due to a bad UTP cable.<br>
><br>
> Since I did not want to significantly increase the size of my USB<br>
> image, I built the driver on my mpd server which is a PC Engines ALIX<br>
> board.<br>
><br>
> On the ALIX board, where some development tools are already installed.<br>
><br>
> sudo apt-get update<br>
> sudo apt-get upgrade<br>
><br>
> sudo apt-get install linux-headers-`uname -r`<br>
><br>
> sudo reboot<br>
><br>
> Log back in and move to an appropriate directory:<br>
><br>
> cd build<br>
><br>
> tar zxf ../dist/e1000e-1.6.3.tar.gz<br>
><br>
> sudo ln -s /usr/src/linux-headers-2.6.38-voyage /usr/src/linux<br>
><br>
> make<br>
><br>
> Then grab the compiled driver (mpd:~/build/e1000e-1.6.3/src/e1000e.ko)<br>
> and get it to the target system (running USB system).<br>
><br>
> On the USB system, verify what driver we are using:<br>
><br>
> dmesg | egrep e1000e<br>
> [ 0.971963] e1000e: Intel(R) PRO/1000 Network Driver - 1.2.20-k2<br>
><br>
> Backup the original driver:<br>
><br>
> sudo cp -pi /lib/modules/2.6.38-voyage/kernel/drivers/net/e1000e/e1000e.ko<br>
> /lib/modules/2.6.38-voyage/kernel/drivers/net/e1000e/e1000e.ko.orig<br>
><br>
> Copy new driver into the modules directory<br>
><br>
> sudo cp -p ~/dist/e1000e.ko<br>
> /lib/modules/2.6.38-voyage/kernel/drivers/net/e1000e<br>
><br>
> sudo /sbin/depmod -a<br>
><br>
> sudo dpkg-reconfigure linux-image-2.6.38-voyage<br>
><br>
> sudo reboot<br>
><br>
> Log back in and verify that the new version is running:<br>
><br>
> dmesg | egrep e1000e<br>
> [ 0.886074] e1000e: Intel(R) PRO/1000 Network Driver - 1.6.3-NAPI<br>
><br>
> Success!<br>
><br>
> Jon (a different one...)<br>
><br>
<br>
</div></div>Did you have to configure additional apt repositories to find the<br>
linux-headers package? I did an apt-cache search headers and didn't<br>
find any header packages for the voyage kernel, only the debian<br>
kernels. I'm using voyage 0.8 if that matters which uses the<br>
3.0.0-voyage kernel. The appropriate headers package would be<br>
linux-headers-3.0.0-voyage and that doesn't seem to exist. From<br>
memory, I have the squeeze repos, voyage repos and sid repos (for the<br>
r8168-dkms package) in sources.list. I will downgrade if necessary as<br>
I don't require bleeding edge anything for this device.<br>
</blockquote></div><br>I just tried to install the headers on a 0.8.0 system and it failed. So, for now this is a problem. I had another driver to customize on 0.8.0 but I will wait since I don't really need it for a few months.<br>
<br>