Hello!
USB stopped working on my Blue&White PowerMAC after upgrading to Linux 2.6.5-rc2. 2.6.5-rc1 is OK. The symptoms are that the list of the devices as shown by lsusb doesn't change when devices are connected or disconnected. It shows the devices present at startup. The interrupt count for the ohci controller doesn't change.
I'm wondering whether you're another person running inti "khubd" problems. There were no OHCI changes between rc1 and rc2 which could explain such a thing.
The relevant kernel messages with 2.6.5-rc1 are:
Actually these aren't enough; you mentioned "the devices", present, this doesn't even show all the enumeration of one of them.
Try enabling CONFIG_USB_DEBUG and then forward the entire dmesg output for USB enumeration (initial), removing a device (flag where that was in the log), and re-inserting a new one (also flag that point).
If it doesn't show anything for the removal, then make sure to include alt-sysrq-t output for (just) khubd.
- Dave
ohci_hcd: 2004 Feb 02 USB 1.1 'Open' Host Controller (OHCI) Driver (PCI) ohci_hcd: block sizes: ed 64 td 64 ohci_hcd 0000:01:06.0: OHCI Host Controller ohci_hcd 0000:01:06.0: irq 28, pci mem f2041000 ohci_hcd 0000:01:06.0: new USB bus registered, assigned bus number 1 ohci_hcd 0000:01:06.0: WARNING: OPTi workarounds unavailable hub 1-0:1.0: USB hub found hub 1-0:1.0: 2 ports detected usb 1-2: new full speed USB device using address 2
# lspci -vvv -s 01:06.0 01:06.0 USB Controller: OPTi Inc. 82C861 (rev 10) (prog-if 10 [OHCI]) Subsystem: OPTi Inc. 82C861 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: 16, Cache Line Size: 0x08 (32 bytes) Interrupt: pin A routed to IRQ 28 Region 0: Memory at 80880000 (32-bit, non-prefetchable) [size=4K]
Compiling OHCI support as module doesn't help. The module cannot be unloaded despite use count 0.
I see massive USB changes between 2.6.5-rc1 and 2.6.5-rc2, and I cannot split them further without breaking compilation.
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