ehci-hcd 模块支持的是 USB2.0 控制器的高速模式,它 本身并不支持全速或低速模式,对连接上的 USB1.1 设备的支持,是通过 ohci-hcd 或 uhci-hcd 模块。如果我们只配置了 EHCI,就没有办法使用 usb 的鼠标键盘。如果你碰到 了usb 键盘或鼠标不能用的情况,很可能就是因为配置 EHCI 的同时没有去配置 OHCI 或 UH...
make install后显示如下: WARNING: No module ehci-hcd found for kernel 3.x.x.art.x86_64, continuing anyway WARNING: No module ohci-hcd found for kernel 3.x.x.art.x86_64, continuing anyway WARNING: No module uhci-hcd found for kernel 3.x.x.art.x86_64, continuing anyway WARNING: No m...
new high speed USB device using ehci_hcd and addr 将USB数据线插上找不到硬件查找出错原因：shell>cat /var/log/dmesg.log |grep usbshell>lsmodshell>lspci -v | grep USB发现如下的提示 device descriptor read/64, error new high speed USB device using ehci_hcd and address解决办法：1、卸载ehci_...
modprobe -r ehci_hcd This kernel module is the responsible for the USB 2.0 support. After ran this command, I was able to copy a lot of files to my external hard drive and it was not suddenly dead anymore. But, as I removed the USB 2.0 support the transfer was running in a very l...
usb 6-3: reset high speed USB device using ehci_hcd and address 2 If I remove the ehci_hcd driver, it works fine with the ohci_hcd driver. I think the device is just not completely USB 2.0 compliant. It seems to flake out under Windows too. I suppose it ...
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> > The only way to prevent it from resuming immediately after the suspend is to > > 'rmmod ehci_hcd' before the suspend. > > > > Interestingly enough, I have no such problems with EHCI on the other test > > box > > that is able to suspend to RAM and resume. ...
usb_packet_unmap() in hw/usb/hcd-ehci.c Hello, A flaw was found in the USB EHCI controller emulation of QEMU. It could occur while processing USB requests due to DMA memory map failure not being properly detected. This was fixed in the following ...