I installed a CenDyne USB2.0 4+1port PCI card but I get random system
freezes, especially if I use the USB devices much. As I don't really need
USB1.x I tried leaving OHCI and UHCI out of my kernel, just including EHCI
in it. Also, I tried upgrading from kernel 2.4.27 to 2.6.8, but I still
get the freezes.
I figured that using a card with an NEC chipset would be a fairly safe
bet. When the kernel starts up it says,
ehci_hcd 0000:00:0a.2: NEC Corporation USB 2.0
ehci_hcd 0000:00:0a.2: irq 5, pci mem e0829000
ehci_hcd 0000:00:0a.2: new USB bus registered, assigned bus number 1
ehci_hcd 0000:00:0a.2: USB 2.0 enabled, EHCI 0.95, driver 2004-May-10
and I can use USB devices to some degree, just with some system freezes.
lspci reports the EHCI part as,
0000:00:0a.2 USB Controller: NEC Corporation USB 2.0 (rev 02) (prog-if 20 [EHCI])
Subsystem: Unknown device 2041:2002
Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV+ VGASnoop- ParErr- Stepping-
SERR- FastB2B-
Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=medium >TAbort- <TAbort-
<MAbort- >SERR- <PERR-
Latency: 132 (4000ns min, 8500ns max), Cache Line Size: 0x10 (64 bytes)
Interrupt: pin C routed to IRQ 5
Region 0: Memory at f4104000 (32-bit, non-prefetchable) [size=256]
Capabilities: [40] Power Management version 2
Flags: PMEClk- DSI- D1+ D2+ AuxCurrent=0mA
PME(D0+,D1+,D2+,D3hot+,D3cold-)
Status: D0 PME-Enable- DSel=0 DScale=0 PME-
Does anyone have any ideas what could be causing the problem? Does anyone
have one of these cards working fine with Linux? Is it likely to be a
driver issue instead of faulty hardware? Ideas are welcomed.
Thanks,
Mark
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