Correct keyboard configuration for Mac (AZERTY)?

[julienmru]

Dear all,

I have a Mac with a French (keyboard) and there a small difference in Mac and PC AZERTY keyboard:

PC

Mac

I use xrdp default configuration, and whichever keyboard layout in choose in xfce, when I press the key on top of the tab key I get a ² and not a @. Other 'main' keys work fine (eg. first letters line is AZERTY and not QWERTY).

Here are the connection logs if that helps:

[2024-09-06T06:55:42.465+0400] [INFO ] Socket 14: connection accepted from [::ffff:10.8.0.2]:65330
[2024-09-06T06:55:42.471+0400] [INFO ] Using default X.509 certificate: /etc/xrdp/cert.pem
[2024-09-06T06:55:42.474+0400] [INFO ] Using default X.509 key file: /etc/xrdp/key.pem
[2024-09-06T06:55:42.478+0400] [INFO ] Security protocol: configured [SSL|RDP], requested [SSL|HYBRID|HYBRID_EX|RDP], selected [SSL]
[2024-09-06T06:55:45.513+0400] [INFO ] Connected client computer name: Juliens-MacBook
[2024-09-06T06:55:45.517+0400] [INFO ] client supports gfx protocol
[2024-09-06T06:55:45.520+0400] [WARN ] Received [MS-RDPBCGR] TS_UD_HEADER type 0xc006 is unknown (ignored)
[2024-09-06T06:55:45.523+0400] [WARN ] Received [MS-RDPBCGR] TS_UD_HEADER type 0xc00a is unknown (ignored)
[2024-09-06T06:55:46.655+0400] [INFO ] xrdp_load_keyboard_layout: Keyboard information sent by the RDP client, keyboard_type:[0x04], keyboard_subtype:[0x00], keylayout:[0x0000080C]
[2024-09-06T06:55:46.659+0400] [INFO ] xrdp_load_keyboard_layout: model [] variant [] layout [us] options []
[2024-09-06T06:55:46.662+0400] [INFO ] TLS connection established from [::ffff:10.8.0.2]:65330 TLSv1.3 with cipher TLS_AES_256_GCM_SHA384
[2024-09-06T06:55:46.967+0400] [INFO ] Client supports single-screen resizes by xrdp
[2024-09-06T06:55:46.971+0400] [INFO ] xrdp_caps_process_pointer: client supports new(color) cursor
[2024-09-06T06:55:46.974+0400] [INFO ] xrdp_process_offscreen_bmpcache: support level 0 cache size 0 MB cache entries 0
[2024-09-06T06:55:46.978+0400] [INFO ] xrdp_caps_process_codecs: NSCodec(CA8D1BB9-000F-154F-589F-AE2D1A87E2D6), codec id [1], properties len [3]
[2024-09-06T06:55:46.981+0400] [INFO ] Client Capability: LARGE_POINTER_FLAG_96x96 supported
[2024-09-06T06:55:46.991+0400] [INFO ] Loading keymap file /etc/xrdp/km-0000080c.ini
[2024-09-06T06:55:46.996+0400] [WARN ] local keymap file for 0x0000080c found and doesn't match built in keymap, using local keymap file
[2024-09-06T06:55:47.477+0400] [INFO ] Login screen monitor height is 1080 pixels over 195 mm (140 DPI)
[2024-09-06T06:55:47.887+0400] [INFO ] xrdp_egfx_create: error 0 channel_id 1
[2024-09-06T06:55:47.180+0400] [INFO ] xrdp_mm_egfx_caps_advertise:
[2024-09-06T06:55:47.183+0400] [INFO ]   version 0x00080004 flags 0x00000002 (index: 0)
[2024-09-06T06:55:47.186+0400] [INFO ]   version 0x00080105 flags 0x00000002 (index: 1)
[2024-09-06T06:55:47.190+0400] [INFO ]   version 0x000a0002 flags 0x00000022 (index: 2)
[2024-09-06T06:55:47.193+0400] [INFO ]   version 0x000a0200 flags 0x00000022 (index: 3)
[2024-09-06T06:55:47.196+0400] [INFO ]   version 0x000a0301 flags 0x00000020 (index: 4)
[2024-09-06T06:55:47.199+0400] [INFO ]   version 0x000a0400 flags 0x00000002 (index: 5)
[2024-09-06T06:55:47.202+0400] [INFO ]   version 0x000a0701 flags 0x00000082 (index: 6)
[2024-09-06T06:55:47.205+0400] [INFO ]   version 0x000b0101 flags 0x00000082 (index: 7)
[2024-09-06T06:55:47.208+0400] [INFO ] unknown version 0x000b0101
[2024-09-06T06:55:47.211+0400] [INFO ]   replying version 0x000a0701 flags 0x00000082
[2024-09-06T06:55:47.214+0400] [INFO ] xrdp_mm_egfx_caps_advertise: xrdp_egfx_send_capsconfirm error 0 best_index 6
[2024-09-06T06:55:47.218+0400] [INFO ] xrdp_egfx_reset_graphics:
[2024-09-06T06:55:47.221+0400] [INFO ] xrdp_egfx_reset_graphics: width 1920 height 1080 monitorcount 1
[2024-09-06T06:55:47.224+0400] [INFO ] xrdp_mm_egfx_caps_advertise: xrdp_egfx_send_reset_graphics error 0 monitorCount 0
[2024-09-06T06:55:47.227+0400] [INFO ] xrdp_mm_egfx_create_surfaces: map surface_id 0 left 0 top 0 width 1920 height 1080
[2024-09-06T06:55:47.230+0400] [INFO ] xrdp_encoder_create: starting gfx rfx pro codec session
[2024-09-06T06:55:47.233+0400] [INFO ] xrdp_mm_egfx_invalidate_wm_screen:
[2024-09-06T06:55:47.236+0400] [INFO ] xrdp_mm_egfx_caps_advertise: egfx created.
[2024-09-06T06:55:47.239+0400] [WARN ] Ignoring obsolete SCP port value '3350'
[2024-09-06T06:55:47.242+0400] [INFO ] xrdp_wm_log_msg: sesman connect ok
[2024-09-06T06:55:47.245+0400] [INFO ] xrdp_wm_log_msg: Performing login request for julien
[2024-09-06T06:55:47.295+0400] [INFO ] xrdp_wm_log_msg: login was successful - creating session
[2024-09-06T06:55:47.305+0400] [INFO ] xrdp_wm_log_msg: session is available on display 10 for user julien
[2024-09-06T06:55:47.309+0400] [INFO ] xrdp_wm_log_msg: Connecting to session
[2024-09-06T06:55:47.313+0400] [INFO ] loaded module 'libvnc.so' ok, interface size 4832, version 4
[2024-09-06T06:55:47.339+0400] [INFO ] VNC: Clipboard (if available) is provided by chansrv facility
[2024-09-06T06:55:47.343+0400] [INFO ] xrdp_wm_log_msg: Connecting to chansrv
[2024-09-06T06:55:47.422+0400] [INFO ] Layout from ClientLayout (geom=1920x1080 #screens=1) : 0:(1920x1080+0+0)
[2024-09-06T06:55:47.427+0400] [INFO ] Layout from OldServerLayout (geom=1920x1080 #screens=1) : 1804289383:(1920x1080+0+0)

Thanks in advance for your insights. I know this is an edge case.

[julienmru]

I dug deeper : )

The issue is in /etc/xrdp/km-0000080c.ini, I had to make the changes below:

[noshift]
Key49=64:64

[shift]
Key49=35:35

I don't know how this file is generated, should I file a bug report or something?

[matt335672]

I think it 's just something you'll need to be aware of - the RDP specification is essentially based around PC scancodes.

The PC keyboard layout for code 0000080c is Belgian French:-

https://www.kbdlayout.info/kbdbe

This seems to correspond to the picture you've reported. If we change the file to suit the Mac, we'll break it for PC users, and vice-versa.

The French layout is here:-

https://www.kbdlayout.info/kbdfrna

That would suit that single key better, but would break a lot of others.

[julienmru]

Thanks, that makes sense. I'll keep my changes local then :)

[matt335672]

Thanks for reporting it - it could well be useful for other Mac users.

Be aware that for the devel version of xrdp (post v0.10.x), we've changed the keyboard file layout. When we get round to delivering that, the file will be called km-0000080c.toml and the lines you want to change will be:-

[noshift]
29="178:U+00B2"  # twosuperior

[shift]
29="179:U+00B3"  # threesuperior

to:-

[noshift]
29="64:U+0040"  # at

[shift]
29="35:U+0023"  # numbersign

In the new format, the key (29 in this case) is the scancode from:-

https://www.kbdlayout.info/kbdfrna/overview+scancodes

which should make it easier to track things down.