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SubjectRe: Magic SysRq +# in 2.4.9-ac/2.4.10-pre12
On Wed, Sep 19, 2001 at 10:34:27AM -0700, Randy.Dunlap wrote:
> Erik Mouw wrote:
> > Same over here with an IBM PS/2 keyboard that originally came with an
> > IBM PS2 model 55SX. The IBM keyboard is connected to an Asus M8300
> > laptop. The keyboard of that laptop has the interesting "feature" that
> > Alt-SysRQ-m sets the loglevel to 0, and Alt-SysRQ-[suob] also set the
> > loglevel to a different value instead of doing their job.
> I'm having this (my same) problem on a different test system/keyboard,
> and I'm beginning to think that it's not a keyboard problem,
> but I don't have any evidence of that one way or the other.
> I've tested 2.4.2, 2.4.5, 2.4.6, 2.4.7, 2.4.9, and 2.4.10-pre,
> and all exhibit the same problem.

Two other data points:

Desktop PC (Asus P5A motherboard, AMD K6/333) and Happy Hacking Lite
keyboard: only Alt-SysRQ-[sm] work, all other don't (unmount, off, and
reboot not tested, though). Kernel is 2.4.9-ac10.

LART StrongARM SA1100 board, serial console (sa1100 driver), kernel
2.4.9-ac9-rmk1-np1 (latest stable release for StrongARM machines):
everything works.

The evidence with the ARM board points in the direction of the keyboard
driver. I don't have a null modem cable right here so I can't test the
desktop with a serial console, but that would also give an interesting
data point.


PS: my laptop also runs 2.4.9-ac10

J.A.K. (Erik) Mouw, Information and Communication Theory Group, Department
of Electrical Engineering, Faculty of Information Technology and Systems,
Delft University of Technology, PO BOX 5031, 2600 GA Delft, The Netherlands
Phone: +31-15-2783635 Fax: +31-15-2781843 Email:
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