Laptop and sound card for ubuntu studio

[Gustin Johnson]

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Kiernan Holland wrote:
> BTW this is my /proc/interrupts on my T30:
> 
>            CPU0      
>   0:   25951692    XT-PIC-XT        timer
>   1:      27903    XT-PIC-XT        i8042
>   2:          0    XT-PIC-XT        cascade
>   3:          4    XT-PIC-XT     
>   4:         10    XT-PIC-XT     
>   5:          3    XT-PIC-XT     
>   6:          5    XT-PIC-XT        floppy
>   7:          0    XT-PIC-XT        parport0
>   8:          0    XT-PIC-XT        rtc0
>   9:      25588    XT-PIC-XT        acpi
>  10:          3    XT-PIC-XT     
>  11:    2497518    XT-PIC-XT        uhci_hcd:usb1, uhci_hcd:usb2,
> uhci_hcd:usb3, yenta, yenta, Intel 82801CA-ICH3, ohci_hcd:usb4,
> ohci_hcd:usb5, ehci_hcd:usb6, radeon at pci:0000:01:00.0, eth0
>  12:       4317    XT-PIC-XT        i8042
>  14:     128633    XT-PIC-XT        ata_piix
>  15:     176986    XT-PIC-XT        ata_piix
> 
> 
> Now you can see why USB sound cards don't work with jack on this laptop
> ..  But the onboard sound card works well with Jack.
> 
11 Mbit is simply not enough bandwidth, USB 1 is not good enough, period.

I would not compare this interrupts file with a more modern machine.  A
lot has changed in the years since the P4, and for the better.  Netburst
is dead, hurray.  The PIC has been replaced by the APIC.  If you care
look them up in wikipedia, the point is that a modern machine will not
look like the above, and this is not only to be expected, but is a good
thing.

Btw, a modern machine will look more like this:

 cat /proc/interrupts
            CPU0       CPU1
   0:    3556184    3574975   IO-APIC-edge      timer
   1:      10144       9053   IO-APIC-edge      i8042
   3:          1          1   IO-APIC-edge
   8:          1          0   IO-APIC-edge      rtc0
   9:       7046       7032   IO-APIC-fasteoi   acpi
  12:      51892      48765   IO-APIC-edge      i8042
  17:          2          1   IO-APIC-fasteoi   ohci1394
  18:          0          0   IO-APIC-fasteoi   mmc0
  20:          0          0   IO-APIC-fasteoi   uhci_hcd:usb1,
  21:        369        274   IO-APIC-fasteoi   uhci_hcd:usb3,
  22:         29         30   IO-APIC-fasteoi   ehci_hcd:usb2,
  28:       2839       2733   PCI-MSI-edge      eth0
  29:      64357      62249   PCI-MSI-edge      ahci
  30:     296809     234756   PCI-MSI-edge      iwlagn
  31:      39859      39865   PCI-MSI-edge      i915 at pci:0000:00:02.0
 NMI:          0          0   Non-maskable interrupts
 LOC:    3938021    3315876   Local timer interrupts
 SPU:          0          0   Spurious interrupts
 CNT:          0          0   Performance counter interrupts
 PND:          0          0   Performance pending work
 RES:     714044    1143357   Rescheduling interrupts
 CAL:       2669       2718   Function call interrupts
 TLB:       2187       2389   TLB shootdowns
 TRM:          0          0   Thermal event interrupts
 THR:          0          0   Threshold APIC interrupts
 MCE:          0          0   Machine check exceptions
 MCP:         38         38   Machine check polls
 ERR:          0

The rest of the advice is sound, boot one of these machines with a
Ubuntu Live CD or bootable USB stick.  Check to make sure your GPU, and
wifi are supported out of the box.

You could always buy from system76 or one of the other Linux vendors.
At least you the routine stuff will work.
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