120914 Volker Armin Hemmann wrote: > On Thu, Sep 13, 2012 at 10:06:01PM -0400, Philip Webb wrote >> Both Mageia -- installed from USB stick in a partition on the >> HDD -- & System Rescue show /dev/input/mouse0 after booting ; >> in the case of SR it does it before I enter the GUI via 'wizard'. >> They have no problem with the 2.0/1.1 port, but the Gentoo system as >> I've installed it don't show /dev/input/mouse0 from that port, but >> only if I plug the mouse into the 3.0/2.0 port. Someone suggested >> it is caused by a Kernel .config setting, which if enabled seems to >> force the system to look in the 3.0 port. Why it should do that >> doesn't make much sense : such upgrades are usually permissive, >> not restrictive. BTW there's no difference between 3.4.9 & 3.5.3 . > All AMD southbridges need the OHCI controller driver.
Indeed, you seem to be correct. The cause was an omitted driver, which was a side-effect of switching from an Intel to an AMD mobo. This machine has a Core2 Duo CPU & my .config for Kernel 3.4.0 has # USB Host Controller Drivers ... CONFIG_USB_EHCI_HCD=y ... # CONFIG_USB_OHCI_HCD is not set ... CONFIG_USB_UHCI_HCD=y ... If you look at the helps which are available during 'make menuconfig', they state (in brief) that OHCI is for 1.1 + AMD, UHCI is for Intel, EHCI is for faster mice using 2.0 & XHCI (new) is for USB 3.0 . So with a Core2 Duo & a mobo with only USB 2.0 , UHCI is enough ; for my new AMD Bulldozer X4 FX-4170 4-Core 4,2 GHz , UHCI doesn't work, but EHCI or XHCI take care of the 2.0/3.0 port, where the mouse works : to be able to use the mouse in the 1.1/2.0 port, OHCI is needed. All rather obscure & I can only thank the gods again for jolting my arm so that I inserted the mouse into the wrong-but-right port. HTH a few others, who can now find this msg via Google. -- ========================,,============================================ SUPPORT ___________//___, Philip Webb ELECTRIC /] [] [] [] [] []| Cities Centre, University of Toronto TRANSIT `-O----------O---' purslowatchassdotutorontodotca
