Cell phone is charging from this port. It's really hard to say something
about events looking at /proc/interrupts. Where should I look?
$ lsusb
Bus 003 Device 002: ID 8087:0024 Intel Corp. Integrated Rate Matching Hub
Bus 004 Device 002: ID 8087:0024 Intel Corp. Integrated Rate Matching Hub
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 003 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 004 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 003 Device 005: ID 0489:e036 Foxconn / Hon Hai
Bus 003 Device 004: ID 04f2:b328 Chicony Electronics Co., Ltd
$ ls /sys/bus/usb/devices
1-0:1.0 3-0:1.0 3-1:1.0 3-1.2:1.0 3-1.3 3-1.3:1.1 4-1 usb1 usb3
2-0:1.0 3-1 3-1.2 3-1.2:1.1 3-1.3:1.0 4-0:1.0 4-1:1.0 usb2 usb4
$ cat /proc/interrupts
CPU0 CPU1 CPU2 CPU3
0: 19 0 0 0 IO-APIC-edge
timer
1: 40 864 18 11 IO-APIC-edge
i8042
8: 1 0 0 0 IO-APIC-edge
rtc0
9: 16 62 2 8 IO-APIC-fasteoi
acpi
12: 129 1094 66 98 IO-APIC-edge i8042
16: 2609 24268 1351 1329 IO-APIC-fasteoi
ehci_hcd:usb3, ath9k
23: 13 16 2 6 IO-APIC-fasteoi
ehci_hcd:usb4
40: 2105 50057 1369 1311 PCI-MSI-edge i915
41: 20 3 0 10 PCI-MSI-edge
rtsx_pci
42: 278 262 167 72 PCI-MSI-edge
xhci_hcd
43: 4562 4693 1233 1701 PCI-MSI-edge ahci
44: 11 3 0 1 PCI-MSI-edge
mei
45: 105 112 34 34 PCI-MSI-edge
snd_hda_intel
46: 0 0 0 0 PCI-MSI-edge
eth0
NMI: 13 16 16 11 Non-maskable
interrupts
LOC: 34609 27442 37060 23151 Local timer interrupts
SPU: 0 0 0 0 Spurious
interrupts
PMI: 13 16 16 11 Performance
monitoring interrupts
IWI: 0 0 0 0 IRQ work
interrupts
RTR: 2 0 0 0 APIC ICR read
retries
RES: 11820 4299 1362 914 Rescheduling interrupts
CAL: 43 47 53 47 Function call
interrupts
TLB: 324 236 657 478 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: 5 5 5 5 Machine check
polls
ERR: 0
MIS: 0
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https://bugs.launchpad.net/bugs/1172908
Title:
USB 2.0 Ports Dont Work on Sony Vaio Laptop
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