diff options
Diffstat (limited to 'marsond.8')
| -rw-r--r-- | marsond.8 | 110 |
1 files changed, 56 insertions, 54 deletions
@@ -27,7 +27,7 @@ level margin: \\n[rst2man-indent\\n[rst2man-indent-level]] .\" new: \\n[rst2man-indent\\n[rst2man-indent-level]] .in \\n[rst2man-indent\\n[rst2man-indent-level]]u .. -.TH "MARSOND" 8 "2025-05-08" "0.3.0" "Urchlay's Stuff" +.TH "MARSOND" 8 "2025-05-09" "0.3.0" "Urchlay's Stuff" .SH NAME marsond \- Fix Enter key timing on Marson/USBLink/MT606-1 PS/2-USB adaptors .SH SYNOPSIS @@ -39,38 +39,7 @@ marsond [\fB\-d\fP \fIdelay\-ms*\fP] [\fB\-f\fP] [\fB\-k\fP \fIkeyboard\-device\ keyboard adaptor. The symptom: in games and emulators, the Enter key only works sometimes. This is caused by the firmware in the adaptor sending the keypress and release events only 8 milliseconds apart. -.sp -The problem happens with any SDL application (SDL1 or SDL2), as well -as other graphics libraries. It happens regardless of what PS/2 -keyboard you have plugged in, what computer you have the adaptor -plugged into, or what OS that computer is running. -.sp -The specific hardware that has the Enter key problem for me is USB -vendor ID 04b4, product ID 0101, "Marson Keyboard and Mouse Link -Ver:ps2120L". It has a label on the front that says "USBLink", and on -the back, the model number is "MT606\-1". It looks like: -.INDENT 0.0 -.INDENT 3.5 -\fI\%https://slackware.uk/~urchlay/sdl\-usblink\-hack/marson\-front.jpg\fP -.sp -\fI\%https://slackware.uk/~urchlay/sdl\-usblink\-hack/marson\-back.jpg\fP -.UNINDENT -.UNINDENT -.sp -I\(aqm not sure if any other USB keyboard adaptors are affected. If you -have the problem on some other adaptor, and \fBmarsond\fP fixes it, -please contact me so I can add the model number to this man page. -.sp -\fBmarsond\fP uses the Linux kernel\(aqs \fBuinput\fP layer to "grab" the -keyboard, create a new virtual keyboard device, and pass events from -the real keyboard to the virtual one. When it sees the key release -event for the Enter key, it simply pauses for a few milliseconds -before delivering it. -.sp -This should work with everything that uses the keyboard. It definitely -does, with SDL 1 and 2 running under X (and SDL 1 on the console, -too). I don\(aqt use Wayland, so I haven\(aqt tested it there. If you do, -please contact me and let me know if it works for you. +See the \fBNOTES\fP section for full details. .sp For normal use, \fBmarsond\fP will be started by a \fBudev\fP(7) rule when the adaptor is plugged in (including booting with the adaptor @@ -83,27 +52,6 @@ connected). The udev rule is found in: .sp \&...which can be edited to change the options it\(aqs run with, if needed. The defaults work well on the author\(aqs system. -.sp -\fBmarsond\fP must be run as root. At startup, it does these -things as root: -.INDENT 0.0 -.IP \(bu 2 -Grab the physical keyboard. -.IP \(bu 2 -Create the virtual keyboard device. -.IP \(bu 2 -Lock its pages into physical memory, to avoid being swapped out. -.IP \(bu 2 -Set its priority (nice value) to \-20 (highest priority), to -avoid slow response on a loaded system. -.UNINDENT -.sp -After doing the above, root access is no longer needed, so it will -drop privileges and run as the \fInobody\fP user by default (but see -\fBENVIRONMENT\fP if you need a different user). -.sp -While \fBmarsond\fP is running, "xinput \-\-list" will show an input -device called "marson virtual keyboard". .SH OPTIONS .sp Options can be "bundled": \fB\-vf\fP is the same as \fB\-v\fP \fB\-f\fP\&. @@ -177,6 +125,60 @@ Group to run as, after dropping privileges. Default: the primary group of the user it\(aqs running as. Normally you won\(aqt have to set this. .UNINDENT +.SH NOTES +.sp +The problem happens with any SDL application (SDL1 or SDL2), as well +as other graphics libraries. It happens regardless of what PS/2 +keyboard you have plugged in, what computer you have the adaptor +plugged into, or what OS that computer is running. +.sp +The specific hardware that has the Enter key problem for me is USB +vendor ID 04b4, product ID 0101, "Marson Keyboard and Mouse Link +Ver:ps2120L". It has a label on the front that says "USBLink", and on +the back, the model number is "MT606\-1". It looks like: +.INDENT 0.0 +.INDENT 3.5 +\fI\%https://slackware.uk/~urchlay/sdl\-usblink\-hack/marson\-front.jpg\fP +.sp +\fI\%https://slackware.uk/~urchlay/sdl\-usblink\-hack/marson\-back.jpg\fP +.UNINDENT +.UNINDENT +.sp +I\(aqm not sure if any other USB keyboard adaptors are affected. If you +have the problem on some other adaptor, and \fBmarsond\fP fixes it, +please contact me so I can add support for it in the future. +.sp +\fBmarsond\fP uses the Linux kernel\(aqs \fBuinput\fP layer to "grab" the +keyboard, create a new virtual keyboard device, and pass events from +the real keyboard to the virtual one. When it sees the key release +event for the Enter key, it simply pauses for a few milliseconds +before delivering it. +.sp +This should work with everything that uses the keyboard. It definitely +does, with SDL 1 and 2 running under X (and SDL 1 on the console, +too). I don\(aqt use Wayland, so I haven\(aqt tested it there. If you do, +please contact me and let me know if it works for you. +.sp +\fBmarsond\fP must be run as root. At startup, it does these +things as root: +.INDENT 0.0 +.IP \(bu 2 +Grab the physical keyboard. +.IP \(bu 2 +Create the virtual keyboard device. +.IP \(bu 2 +Lock its pages into physical memory, to avoid being swapped out. +.IP \(bu 2 +Set its priority (nice value) to \-20 (highest priority), to +avoid slow response on a loaded system. +.UNINDENT +.sp +After doing the above, root access is no longer needed, so it will +drop privileges and run as the \fInobody\fP user by default (but see +\fBENVIRONMENT\fP if you need a different user). +.sp +While \fBmarsond\fP is running, "xinput \-\-list" will show an input +device called "marson virtual keyboard". .SH LIMITATIONS .sp Only one MT\-606\-1 device is supported, out of the box. This shouldn\(aqt |