From: Clemens Ladisch <clemens@xxxxxxxxxx>
Date: Sat, 12 May 2012 20:30:29 +0200
> plutek wrote:
>> i've been running AVLinux5.0.3 on a ThinkPad T61p for a while now....
>> with an ART USB Dual Tube Pre, i can run Jack at 64 frames, 2 periods
>>
>> now i've got a new ThinkPad T520, and if i start jack on USB at 64*2
>> i get hundreds of xruns in seconds.
>
> Both machines run (I assume) the same software? Then the problem is
> with the hardware, or its drivers.
>
> Please show the output of lspci and the contents of /proc/interrupts.
alright, here they are:
root@palnote:/home/plutek# lspci
00:00.0 Host bridge: Intel Corporation Sandy Bridge DRAM Controller (rev 09)
00:02.0 VGA compatible controller: Intel Corporation Sandy Bridge Integrated Graphics Controller (rev 09)
00:16.0 Communication controller: Intel Corporation Cougar Point HECI Controller #1 (rev 04)
00:19.0 Ethernet controller: Intel Corporation 82579LM Gigabit Network Connection (rev 04)
00:1a.0 USB Controller: Intel Corporation Cougar Point USB Enhanced Host Controller #2 (rev 04)
00:1b.0 Audio device: Intel Corporation Cougar Point High Definition Audio Controller (rev 04)
00:1c.0 PCI bridge: Intel Corporation Cougar Point PCI Express Root Port 1 (rev b4)
00:1c.1 PCI bridge: Intel Corporation Cougar Point PCI Express Root Port 2 (rev b4)
00:1c.3 PCI bridge: Intel Corporation Cougar Point PCI Express Root Port 4 (rev b4)
00:1c.4 PCI bridge: Intel Corporation Cougar Point PCI Express Root Port 5 (rev b4)
00:1d.0 USB Controller: Intel Corporation Cougar Point USB Enhanced Host Controller #1 (rev 04)
00:1f.0 ISA bridge: Intel Corporation Cougar Point LPC Controller (rev 04)
00:1f.2 SATA controller: Intel Corporation Cougar Point 6 port SATA AHCI Controller (rev 04)
00:1f.3 SMBus: Intel Corporation Cougar Point SMBus Controller (rev 04)
03:00.0 Network controller: Realtek Semiconductor Co., Ltd. RTL8188CE 802.11b/g/n WiFi Adapter (rev 01)
0d:00.0 System peripheral: Ricoh Co Ltd Device e823 (rev 08)
0d:00.3 FireWire (IEEE 1394): Ricoh Co Ltd FireWire Host Controller (rev 04)
root@palnote:/home/plutek# cat /proc/interrupts
CPU0 CPU1 CPU2 CPU3
0: 243 0 0 0 IO-APIC-edge timer
1: 1511 0 0 0 IO-APIC-edge i8042
8: 1 0 0 0 IO-APIC-edge rtc0
9: 28481 0 0 0 IO-APIC-fasteoi acpi
12: 15976 0 0 0 IO-APIC-edge i8042
16: 18305 0 0 0 IO-APIC-fasteoi mmc0, ehci_hcd:usb1, mei
23: 60179021 0 0 0 IO-APIC-fasteoi ehci_hcd:usb2
40: 2989 0 0 0 PCI-MSI-edge
41: 573 0 0 0 PCI-MSI-edge firewire_ohci
42: 9506 0 0 0 PCI-MSI-edge ahci
43: 311111 0 0 0 PCI-MSI-edge i915
NMI: 0 0 0 0 Non-maskable interrupts
LOC: 1193738 4643806 1633507 1673425 Local timer interrupts
SPU: 0 0 0 0 Spurious interrupts
PMI: 0 0 0 0 Performance monitoring interrupts
IWI: 0 0 0 0 IRQ work interrupts
RES: 9862796 73470954 19362597 18060482 Rescheduling interrupts
CAL: 21749 5487 20141 22523 Function call interrupts
TLB: 258 357 304 486 TLB shootdowns
TRM: 0 0 0 0 Thermal event interrupts
THR: 0 0 0 0 Threshold APIC interrupts
MCE: 0 0 0 0 Machine check exceptions
MCP: 123 123 123 123 Machine check polls
ERR: 0
MIS: 0
thanks much.... cheers!
.pltk.
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