€•â&      Œsphinx.addnodes”Œdocument”“”)”}”(Œ	rawsource”Œ ”Œchildren”]”(Œtranslations”ŒLanguagesNode”“”)”}”(hhh]”(h Œpending_xref”“”)”}”(hhh]”Œdocutils.nodes”ŒText”“”ŒChinese (Simplified)”…””}”Œparent”hsbaŒ
attributes”}”(Œids”]”Œclasses”]”Œnames”]”Œdupnames”]”Œbackrefs”]”Œ	refdomain”Œstd”Œreftype”Œdoc”Œ	reftarget”Œ//translations/zh_CN/arch/x86/usb-legacy-support”Œmodname”NŒ	classname”NŒrefexplicit”ˆuŒtagname”hhhubh)”}”(hhh]”hŒChinese (Traditional)”…””}”hh2sbah}”(h]”h ]”h"]”h$]”h&]”Œ	refdomain”h)Œreftype”h+Œ	reftarget”Œ//translations/zh_TW/arch/x86/usb-legacy-support”Œmodname”NŒ	classname”NŒrefexplicit”ˆuh1hhhubh)”}”(hhh]”hŒItalian”…””}”hhFsbah}”(h]”h ]”h"]”h$]”h&]”Œ	refdomain”h)Œreftype”h+Œ	reftarget”Œ//translations/it_IT/arch/x86/usb-legacy-support”Œmodname”NŒ	classname”NŒrefexplicit”ˆuh1hhhubh)”}”(hhh]”hŒJapanese”…””}”hhZsbah}”(h]”h ]”h"]”h$]”h&]”Œ	refdomain”h)Œreftype”h+Œ	reftarget”Œ//translations/ja_JP/arch/x86/usb-legacy-support”Œmodname”NŒ	classname”NŒrefexplicit”ˆuh1hhhubh)”}”(hhh]”hŒKorean”…””}”hhnsbah}”(h]”h ]”h"]”h$]”h&]”Œ	refdomain”h)Œreftype”h+Œ	reftarget”Œ//translations/ko_KR/arch/x86/usb-legacy-support”Œmodname”NŒ	classname”NŒrefexplicit”ˆuh1hhhubh)”}”(hhh]”hŒSpanish”…””}”hh‚sbah}”(h]”h ]”h"]”h$]”h&]”Œ	refdomain”h)Œreftype”h+Œ	reftarget”Œ//translations/sp_SP/arch/x86/usb-legacy-support”Œmodname”NŒ	classname”NŒrefexplicit”ˆuh1hhhubeh}”(h]”h ]”h"]”h$]”h&]”Œcurrent_language”ŒEnglish”uh1h
hhŒ	_document”hŒsource”NŒline”NubhŒcomment”“”)”}”(hŒ SPDX-License-Identifier: GPL-2.0”h]”hŒ SPDX-License-Identifier: GPL-2.0”…””}”hh£sbah}”(h]”h ]”h"]”h$]”h&]”Œ	xml:space”Œpreserve”uh1h¡hhhžhhŸŒI/var/lib/git/docbuild/linux/Documentation/arch/x86/usb-legacy-support.rst”h KubhŒsection”“”)”}”(hhh]”(hŒtitle”“”)”}”(hŒUSB Legacy support”h]”hŒUSB Legacy support”…””}”(hh»hžhhŸNh Nubah}”(h]”h ]”h"]”h$]”h&]”uh1h¹hh¶hžhhŸh³h KubhŒ
field_list”“”)”}”(hhh]”hŒfield”“”)”}”(hhh]”(hŒ
field_name”“”)”}”(hŒAuthor”h]”hŒAuthor”…””}”(hhÕhžhhŸNh Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hÓhhÐhŸh³h K ubhŒ
field_body”“”)”}”(hŒ0Vojtech Pavlik <vojtech@suse.cz>, January 2004

”h]”hŒ	paragraph”“”)”}”(hŒ.Vojtech Pavlik <vojtech@suse.cz>, January 2004”h]”(hŒVojtech Pavlik <”…””}”(hhëhžhhŸNh NubhŒ	reference”“”)”}”(hŒvojtech@suse.cz”h]”hŒvojtech@suse.cz”…””}”(hhõhžhhŸNh Nubah}”(h]”h ]”h"]”h$]”h&]”Œrefuri”Œmailto:vojtech@suse.cz”uh1hóhhëubhŒ>, January 2004”…””}”(hhëhžhhŸNh Nubeh}”(h]”h ]”h"]”h$]”h&]”uh1héhŸh³h Khhåubah}”(h]”h ]”h"]”h$]”h&]”uh1hãhhÐubeh}”(h]”h ]”h"]”h$]”h&]”uh1hÎhŸh³h KhhËhžhubah}”(h]”h ]”h"]”h$]”h&]”uh1hÉhh¶hžhhŸh³h Kubhê)”}”(hŒúAlso known as "USB Keyboard" or "USB Mouse support" in the BIOS Setup is a
feature that allows one to use the USB mouse and keyboard as if they were
their classic PS/2 counterparts.  This means one can use an USB keyboard to
type in LILO for example.”h]”hX  Also known as â€œUSB Keyboardâ€ or â€œUSB Mouse supportâ€ in the BIOS Setup is a
feature that allows one to use the USB mouse and keyboard as if they were
their classic PS/2 counterparts.  This means one can use an USB keyboard to
type in LILO for example.”…””}”(hj!  hžhhŸNh Nubah}”(h]”h ]”h"]”h$]”h&]”uh1héhŸh³h Khh¶hžhubhê)”}”(hŒ!It has several drawbacks, though:”h]”hŒ!It has several drawbacks, though:”…””}”(hj/  hžhhŸNh Nubah}”(h]”h ]”h"]”h$]”h&]”uh1héhŸh³h Khh¶hžhubhŒenumerated_list”“”)”}”(hhh]”(hŒ	list_item”“”)”}”(hŒíOn some machines, the emulated PS/2 mouse takes over even when no USB
mouse is present and a real PS/2 mouse is present.  In that case the extra
features (wheel, extra buttons, touchpad mode) of the real PS/2 mouse may
not be available.
”h]”hê)”}”(hŒìOn some machines, the emulated PS/2 mouse takes over even when no USB
mouse is present and a real PS/2 mouse is present.  In that case the extra
features (wheel, extra buttons, touchpad mode) of the real PS/2 mouse may
not be available.”h]”hŒìOn some machines, the emulated PS/2 mouse takes over even when no USB
mouse is present and a real PS/2 mouse is present.  In that case the extra
features (wheel, extra buttons, touchpad mode) of the real PS/2 mouse may
not be available.”…””}”(hjH  hžhhŸNh Nubah}”(h]”h ]”h"]”h$]”h&]”uh1héhŸh³h KhjD  ubah}”(h]”h ]”h"]”h$]”h&]”uh1jB  hj?  hžhhŸh³h NubjC  )”}”(hŒÚIf AMD64 64-bit mode is enabled, again system crashes often happen,
because the SMM BIOS isn't expecting the CPU to be in 64-bit mode.  The
BIOS manufacturers only test with Windows, and Windows doesn't do 64-bit
yet.
”h]”hê)”}”(hŒÙIf AMD64 64-bit mode is enabled, again system crashes often happen,
because the SMM BIOS isn't expecting the CPU to be in 64-bit mode.  The
BIOS manufacturers only test with Windows, and Windows doesn't do 64-bit
yet.”h]”hŒÝIf AMD64 64-bit mode is enabled, again system crashes often happen,
because the SMM BIOS isnâ€™t expecting the CPU to be in 64-bit mode.  The
BIOS manufacturers only test with Windows, and Windows doesnâ€™t do 64-bit
yet.”…””}”(hj`  hžhhŸNh Nubah}”(h]”h ]”h"]”h$]”h&]”uh1héhŸh³h Khj\  ubah}”(h]”h ]”h"]”h$]”h&]”uh1jB  hj?  hžhhŸh³h Nubeh}”(h]”h ]”h"]”h$]”h&]”Œenumtype”Œarabic”Œprefix”hŒsuffix”Œ)”uh1j=  hh¶hžhhŸh³h Kubhê)”}”(hŒ
Solutions:”h]”hŒ
Solutions:”…””}”(hj  hžhhŸNh Nubah}”(h]”h ]”h"]”h$]”h&]”uh1héhŸh³h Khh¶hžhubhŒdefinition_list”“”)”}”(hhh]”(hŒdefinition_list_item”“”)”}”(hŒäProblem 1)
can be solved by loading the USB drivers prior to loading the
PS/2 mouse driver. Since the PS/2 mouse driver is in 2.6 compiled into
the kernel unconditionally, this means the USB drivers need to be
compiled-in, too.
”h]”(hŒterm”“”)”}”(hŒ
Problem 1)”h]”hŒ
Problem 1)”…””}”(hjš  hžhhŸNh Nubah}”(h]”h ]”h"]”h$]”h&]”uh1j˜  hŸh³h K"hj”  ubhŒ
definition”“”)”}”(hhh]”hê)”}”(hŒØcan 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.”h]”hŒØcan 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.”…””}”(hj­  hžhhŸNh Nubah}”(h]”h ]”h"]”h$]”h&]”uh1héhŸh³h Khjª  ubah}”(h]”h ]”h"]”h$]”h&]”uh1j¨  hj”  ubeh}”(h]”h ]”h"]”h$]”h&]”uh1j’  hŸh³h K"hj  ubj“  )”}”(hX/  Problem 2)
is usually fixed by a BIOS update. Check the board
manufacturers web site. If an update is not available, disable USB
Legacy support in the BIOS. If this alone doesn't help, try also adding
idle=poll on the kernel command line. The BIOS may be entering the SMM
on the HLT instruction as well.”h]”(j™  )”}”(hŒ
Problem 2)”h]”hŒ
Problem 2)”…””}”(hjË  hžhhŸNh Nubah}”(h]”h ]”h"]”h$]”h&]”uh1j˜  hŸh³h K(hjÇ  ubj©  )”}”(hhh]”hê)”}”(hX$  is usually fixed by a BIOS update. Check the board
manufacturers web site. If an update is not available, disable USB
Legacy support in the BIOS. If this alone doesn't help, try also adding
idle=poll on the kernel command line. The BIOS may be entering the SMM
on the HLT instruction as well.”h]”hX&  is usually fixed by a BIOS update. Check the board
manufacturers web site. If an update is not available, disable USB
Legacy support in the BIOS. If this alone doesnâ€™t help, try also adding
idle=poll on the kernel command line. The BIOS may be entering the SMM
on the HLT instruction as well.”…””}”(hjÜ  hžhhŸNh Nubah}”(h]”h ]”h"]”h$]”h&]”uh1héhŸh³h K%hjÙ  ubah}”(h]”h ]”h"]”h$]”h&]”uh1j¨  hjÇ  ubeh}”(h]”h ]”h"]”h$]”h&]”uh1j’  hŸh³h K(hj  hžhubeh}”(h]”h ]”h"]”h$]”h&]”uh1j  hh¶hžhhŸh³h Nubeh}”(h]”Œusb-legacy-support”ah ]”h"]”Œusb legacy support”ah$]”h&]”uh1h´hhhžhhŸh³h Kubeh}”(h]”h ]”h"]”h$]”h&]”Œsource”h³uh1hŒcurrent_source”NŒcurrent_line”NŒsettings”Œdocutils.frontend”ŒValues”“”)”}”(h¹NŒ	generator”NŒ	datestamp”NŒsource_link”NŒ
source_url”NŒtoc_backlinks”Œentry”Œfootnote_backlinks”KŒsectnum_xform”KŒstrip_comments”NŒstrip_elements_with_classes”NŒstrip_classes”NŒreport_level”KŒ
halt_level”KŒexit_status_level”KŒdebug”NŒwarning_stream”NŒ	traceback”ˆŒinput_encoding”Œ	utf-8-sig”Œinput_encoding_error_handler”Œstrict”Œoutput_encoding”Œutf-8”Œoutput_encoding_error_handler”j'  Œerror_encoding”Œutf-8”Œerror_encoding_error_handler”Œbackslashreplace”Œlanguage_code”Œen”Œrecord_dependencies”NŒconfig”NŒ	id_prefix”hŒauto_id_prefix”Œid”Œdump_settings”NŒdump_internals”NŒdump_transforms”NŒdump_pseudo_xml”NŒexpose_internals”NŒstrict_visitor”NŒ_disable_config”NŒ_source”h³Œ_destination”NŒ_config_files”]”Œ7/var/lib/git/docbuild/linux/Documentation/docutils.conf”aŒfile_insertion_enabled”ˆŒraw_enabled”KŒline_length_limit”M'Œpep_references”NŒpep_base_url”Œhttps://peps.python.org/”Œpep_file_url_template”Œpep-%04d”Œrfc_references”NŒrfc_base_url”Œ&https://datatracker.ietf.org/doc/html/”Œ	tab_width”KŒtrim_footnote_reference_space”‰Œsyntax_highlight”Œlong”Œsmart_quotes”ˆŒsmartquotes_locales”]”Œcharacter_level_inline_markup”‰Œdoctitle_xform”‰Œdocinfo_xform”KŒsectsubtitle_xform”‰Œimage_loading”Œlink”Œembed_stylesheet”‰Œcloak_email_addresses”ˆŒsection_self_link”‰Œenv”NubŒreporter”NŒindirect_targets”]”Œsubstitution_defs”}”Œsubstitution_names”}”Œrefnames”}”Œrefids”}”Œnameids”}”j  jþ  sŒ	nametypes”}”j  ‰sh}”jþ  h¶sŒfootnote_refs”}”Œcitation_refs”}”Œautofootnotes”]”Œautofootnote_refs”]”Œsymbol_footnotes”]”Œsymbol_footnote_refs”]”Œ	footnotes”]”Œ	citations”]”Œautofootnote_start”KŒsymbol_footnote_start”K Œ
id_counter”Œcollections”ŒCounter”“”}”…”R”Œparse_messages”]”Œtransform_messages”]”Œtransformer”NŒinclude_log”]”Œ
decoration”Nhžhub.