Messages in this thread |  | | Subject | Re: [PATCH] tty/sysrq: Add alternative SysRq key | From | Andrzej Pietrasiewicz <> | Date | Fri, 26 Jun 2020 13:07:38 +0200 |
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Hi Pavel,
W dniu 21.06.2020 o 23:21, Pavel Machek pisze: > Hi! > >> There exist machines which don't have SysRq key at all, e.g. chromebooks. >> >> This patch allows configuring an alternative key to act as SysRq. Devices >> which declare KEY_SYSRQ in their 'keybit' bitmap continue using KEY_SYSRQ, >> but other devices use the alternative SysRq key instead, by default F10. >> Which key is actually used can be modified with sysrq's module parameter. >> >> Signed-off-by: Andrzej Pietrasiewicz <andrzej.p@collabora.com> > > So... SysRq was selected because you are not going to press > Alt-Printscreen-X by default.
This patch does not change the Alt-PrintScreen/SysRq-something sequence. What it does instead is making the 'PrintScreen/SysRq' component of the sequence configurable for input devices which don't declare KEY_SYSRQ in their 'keybit' bitmap, so the sequence becomes:
Alt-<alternative sysrq key>-something
If the alternative sysrq key is used (i.e. the input device in question does not declare KEY_SYSRQ), it is F10 by default and _that_ can be changed with the module parameter.
To summarize:
- devices which do declare KEY_SYSRQ must use Alt-PrintScreen/SysRq-something - devices which don't declare KEY_SYSRQ must use Alt-F10-something, but F10 can be changed with a module parameter to something else
Regards,
Andrzej
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