diff options
Diffstat (limited to 'Documentation/x86')
| -rw-r--r-- | Documentation/x86/index.rst | 1 | ||||
| -rw-r--r-- | Documentation/x86/usb-legacy-support.rst (renamed from Documentation/x86/usb-legacy-support.txt) | 40 |
2 files changed, 24 insertions, 17 deletions
diff --git a/Documentation/x86/index.rst b/Documentation/x86/index.rst index 453557097743..3eb0334ae2d4 100644 --- a/Documentation/x86/index.rst +++ b/Documentation/x86/index.rst @@ -25,3 +25,4 @@ x86-specific Documentation pti microcode resctrl_ui + usb-legacy-support diff --git a/Documentation/x86/usb-legacy-support.txt b/Documentation/x86/usb-legacy-support.rst index 1894cdfc69d9..e01c08b7c981 100644 --- a/Documentation/x86/usb-legacy-support.txt +++ b/Documentation/x86/usb-legacy-support.rst @@ -1,7 +1,11 @@ + +.. SPDX-License-Identifier: GPL-2.0 + +================== USB Legacy support -~~~~~~~~~~~~~~~~~~ +================== -Vojtech Pavlik <vojtech@suse.cz>, January 2004 +:Author: Vojtech Pavlik <vojtech@suse.cz>, January 2004 Also known as "USB Keyboard" or "USB Mouse support" in the BIOS Setup is a @@ -27,18 +31,20 @@ It has several drawbacks, though: Solutions: -Problem 1) can be solved by loading the USB drivers prior to loading the -PS/2 mouse driver. Since the PS/2 mouse driver is in 2.6 compiled into -the kernel unconditionally, this means the USB drivers need to be -compiled-in, too. - -Problem 2) can currently only be solved by either disabling HIGHMEM64G -in the kernel config or USB Legacy support in the BIOS. A BIOS update -could help, but so far no such update exists. - -Problem 3) is usually fixed by a BIOS update. Check the board -manufacturers web site. If an update is not available, disable USB -Legacy support in the BIOS. If this alone doesn't help, try also adding -idle=poll on the kernel command line. The BIOS may be entering the SMM -on the HLT instruction as well. - +Problem 1) + can be solved by loading the USB drivers prior to loading the + PS/2 mouse driver. Since the PS/2 mouse driver is in 2.6 compiled into + the kernel unconditionally, this means the USB drivers need to be + compiled-in, too. + +Problem 2) + can currently only be solved by either disabling HIGHMEM64G + in the kernel config or USB Legacy support in the BIOS. A BIOS update + could help, but so far no such update exists. + +Problem 3) + is usually fixed by a BIOS update. Check the board + manufacturers web site. If an update is not available, disable USB + Legacy support in the BIOS. If this alone doesn't help, try also adding + idle=poll on the kernel command line. The BIOS may be entering the SMM + on the HLT instruction as well. |