usb ports issue
Hi,
there are 8 usb ports on my comp and whenever i restart my Red Hat Enterprise Linux AS release 3 it recognises 5 ports randomly... kernel-2.4.21-4.ELsmp so if my keybd or mouse is not on one of the "chosen ports" i will have to replug them.... i did a lsusb and this is what is shown Bus 005 Device 001: ID 0000:0000 Bus 004 Device 001: ID 0000:0000 Bus 003 Device 001: ID 0000:0000 Bus 002 Device 001: ID 0000:0000 Bus 001 Device 001: ID 0000:0000 Any assistance is appreciated... |
Checked any USB related BIOS settings?
Anything related in dmesg output? |
Make sure the hid and usb modules for keyboard and mouse are loaded during boot up.
In the BIOS it does help to set USB mouse and keyboard to legacy. In some cases, adding noapic or noacpi or apci=off to the boot loader will help activate USB mouse and keyboard. If you have PS/2 connectors, use them instead because they are a lot more reliable than USB. |
Thanks for the replies.
While I am checking them , this is the usb related dmesg output.Interesting because it says it detects 8 ports: usb.c: registered new driver usbdevfs usb.c: registered new driver hub usb-uhci.c: $Revision: 1.275 $ time 18:08:43 Oct 3 2003 usb-uhci.c: High bandwidth mode enabled PCI: Setting latency timer of device 00:1d.0 to 64 usb-uhci.c: USB UHCI at I/O 0xff80, IRQ 21 usb-uhci.c: Detected 2 ports usb.c: new USB bus registered, assigned bus number 1 hub.c: USB hub found hub.c: 2 ports detected PCI: Setting latency timer of device 00:1d.1 to 64 usb-uhci.c: USB UHCI at I/O 0xff60, IRQ 22 usb-uhci.c: Detected 2 ports usb.c: new USB bus registered, assigned bus number 2 hub.c: USB hub found hub.c: 2 ports detected PCI: Setting latency timer of device 00:1d.2 to 64 usb-uhci.c: USB UHCI at I/O 0xff40, IRQ 18 usb-uhci.c: Detected 2 ports usb.c: new USB bus registered, assigned bus number 3 hub.c: USB hub found hub.c: 2 ports detected PCI: Setting latency timer of device 00:1d.3 to 64 usb-uhci.c: USB UHCI at I/O 0xff20, IRQ 23 usb-uhci.c: Detected 2 ports usb.c: new USB bus registered, assigned bus number 4 hub.c: USB hub found hub.c: 2 ports detected usb-uhci.c: v1.275:USB Universal Host Controller Interface driver PCI: Setting latency timer of device 00:1d.7 to 64 ehci-hcd 00:1d.7: PCI device 8086:27cc (Intel Corp.) ehci-hcd 00:1d.7: irq 21, pci mem f8864800 usb.c: new USB bus registered, assigned bus number 5 ehci-hcd 00:1d.7: enabled 64bit PCI DMA PCI: 00:1d.7 PCI cache line size set incorrectly (0 bytes) by BIOS/FW. PCI: 00:1d.7 PCI cache line size corrected to 128. ehci-hcd 00:1d.7: USB 2.0 enabled, EHCI 1.00, driver 2003-Jan-22 hub.c: USB hub found hub.c: 8 ports detected usb.c: registered new driver hiddev usb.c: registered new driver hid hid-core.c: v1.8.1 Andreas Gal, Vojtech Pavlik <vojtech@suse.cz> hid-core.c: USB HID support drivers mice: PS/2 mouse device common for all mice hub.c: connect-debounce failed, port 2 disabled |
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