[Nix-dev] PCI Expresscard not working under NixOS

[Christoph-Simon Senjak]

Hi.

I said in my first E-Mail that I tried the thing under Ubuntu, and that 
it is already the Expresscard Slot that NixOS does not recognize. Why do 
I get suggestions to try to plug in USB Hardware then, and try it under 
Ubuntu?

Anyway, I tried it under Ubuntu und Arch, it worked, I diffed 
/proc/config.gz, and found some differences. Here are the kernel flags 
that I chose from it which now made it work (I have no idea which one it 
was, but I have no time to try it out exactly, because somehow the 
Kernel is only built singly-threaded, and this takes 5 hours every time):

   nixpkgs.config.packageOverrides = pkgs: {
       bluez = pkgs.bluez5;
       stdenv = pkgs.stdenv // {
                platform = pkgs.stdenv.platform // {
                kernelExtraConfig = ''
                   HOTPLUG_PCI y
                   HOTPLUG_PCI_PCIE y
                   HOTPLUG_PCI_ACPI y
                   GART_IOMMU y
#                 PCMCIA y
                   PCI_REALLOC_ENABLE_AUTO y
                '';
                 };
          };
   };

Regards, CSS

On 07.02.2017 16:30, David Izquierdo wrote:
> And while you're at it, you should probably check `lspci -k` on the
> working system to see what kernel module it uses, in case it's missing
> from NixOS.
>
>
> On 07/02/17 12:26, Tomasz Czyż wrote:
>> What about doing quick check and running ubuntu from livecd/usb to
>> confirm if card still is alive?
>>
>> 2017-02-07 2:23 GMT+00:00 Roger Qiu <roger.qiu at matrix.ai
>> <mailto:roger.qiu at matrix.ai>>:
>>
>>     It might be a missing driver. Ultimately is the kernel, its
>>     drivers and modules that deal with hardware and IO. You might need
>>     to google around and ask specifically for the given pci expess
>>     hardware serial code and model.
>>
>>     On 07/02/2017 9:39 AM, "Christoph-Simon Senjak"
>>     <christoph.senjak at googlemail.com
>>     <mailto:christoph.senjak at googlemail.com>> wrote:
>>
>>         Hello.
>>
>>         On 06.02.2017 06:36, Roger Qiu wrote:
>>
>>             When you plug something in, the kernel log should show
>>             something. If it
>>             doesn't then the kernel doesn't know about it, nothing in
>>             the userspace
>>             can help.
>>
>>
>>         How can that be?
>>
>>             Make sure you're running those commands before you plug
>>             the usb in.
>>
>>         >
>>
>>             Also I used to have faulty usb cables, but even then the
>>             kernel showed
>>             something. Usually repeating messages because the usb
>>             cable kept
>>             dropping out and coming back in.
>>
>>             What happens if you plug those devices directly?
>>
>>
>>         The kernel does not notice the expresscard itself when I plug
>>         it in. My usb hard disk works perfectly under the other ports.
>>
>>         Ah, and fun fact: When plugging in the expresscard, I can
>>         reproducibly scramble my sound output for a second (the music
>>         repeats for a second after I plug it in). Still, the kernel
>>         says nothing. And no device nodes appear.
>>
>>
>>             On 06/02/2017 2:55 PM, "Christoph-Simon Senjak"
>>             <christoph.senjak at googlemail.com
>>             <mailto:christoph.senjak at googlemail.com>
>>             <mailto:christoph.senjak at googlemail.com
>>             <mailto:christoph.senjak at googlemail.com>>> wrote:
>>
>>                 Hi.
>>
>>                 On 06.02.2017 04:46, Peter Hoeg wrote:
>>
>>                     Hi,
>>
>>                         My USB 3.0 Expresscard does not work under
>>             NixOS, it used to
>>                         work
>>                         under other distros. I already tried to add
>>
>>
>>                     Can you be a little more specific about "does not
>>             work"?
>>
>>
>>                 Nothing happens. Like, really nothing. No new hub is
>>             shown in lsusb
>>                 (as it was under Ubuntu). Devices I plug in are not
>>             shown. Nothing.
>>
>>                     When you plug it in, what messages are you seeing
>>             while running
>>                     these 2
>>                     commands in separate terminals:
>>
>>                     journalctl -k -f
>>
>>                     and
>>
>>                     udevadm monitor
>>
>>
>>                 Nothing. No output.
>>
>>                 Regards, CSS
>>                 _______________________________________________
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>>             <mailto:nix-dev at lists.science.uu.nl>
>>             <mailto:nix-dev at lists.science.uu.nl
>>             <mailto:nix-dev at lists.science.uu.nl>>
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>>                 <http://lists.science.uu.nl/mailman/listinfo/nix-dev
>>             <http://lists.science.uu.nl/mailman/listinfo/nix-dev>>
>>
>>
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>>
>>
>>
>>
>> --
>> Tomasz Czyż
>>
>>
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