problems_with_usb_keyboards_after_pirlp_install
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| problems_with_usb_keyboards_after_pirlp_install [2013/03/14 20:07] – 142.103.194.1 | problems_with_usb_keyboards_after_pirlp_install [2013/03/14 20:26] (current) – 72.37.171.132 | ||
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| The most likely cause is the parameter used to lower the speed of the USB port. This can be removed so that the Pi system can be configured/ | The most likely cause is the parameter used to lower the speed of the USB port. This can be removed so that the Pi system can be configured/ | ||
| - | ====The Workarounds==== | + | ====Workarounds==== |
| The best workaround is to boot the Pi without the keyboard, and then use Secure Shell (SSH) to access the node to perform all configuration and setup. The other workaround is to temporarily remove the USB speed parameter. | The best workaround is to boot the Pi without the keyboard, and then use Secure Shell (SSH) to access the node to perform all configuration and setup. The other workaround is to temporarily remove the USB speed parameter. | ||
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| The file that contains the boot-time parameter you need to change is cmdline.txt. It is accessible by putting the SD card into another computer and viewing the contents of the first partition. The file is also editable on the Pi itself - / | The file that contains the boot-time parameter you need to change is cmdline.txt. It is accessible by putting the SD card into another computer and viewing the contents of the first partition. The file is also editable on the Pi itself - / | ||
| - | WARNING - If you take the SD card from the Pi and plug it into a Windows PC, it may ask you to format the disk because of the second partition it does not recognize. DO NOT format the partition, or you will lose your Pi installation. | + | **WARNING** - If you take the SD card from the Pi and plug it into a Windows PC, it may ask you to format the disk because of the second partition it does not recognize. DO NOT format the partition, or you will lose your Pi installation. |
| The parameter is dwc_otg.speed=1. If you remove this from the cmdline.txt file, the USB host controller will operate at USB 2.0 speeds, and your USB keyboard may start to work again. | The parameter is dwc_otg.speed=1. If you remove this from the cmdline.txt file, the USB host controller will operate at USB 2.0 speeds, and your USB keyboard may start to work again. | ||
problems_with_usb_keyboards_after_pirlp_install.txt · Last modified: 2013/03/14 20:26 by 72.37.171.132