MULTIMON no longer works

[RohanBhattacharyya]

Thanks for reporting this.

For anyone coming across this, add +home-drive to your RDP_FLAGS.
If you were using MULTIMON before, also add /multimon.

If you're having issues on non-multimon setups, try adding +span.

Originally posted by @oskardotglobal in #571

Hello. I have tried the steps above, and previously, they had been working. However, as of yesterday, they had stopped functioning. The only way I am able to run winapps is without multimon entirely (no /multimon flag, and MULTIMON is set to false). That means I am currently unable to drag my apps from one screen to another, and am locked to one. Is there any workaround for this? (I get error 14 when trying to add MULTIMON support)

[oskardotglobal]

Can you post your config?

[RohanBhattacharyya]

Here is my config. This is what currently works for me. (had to upload as a txt because github didn't like .conf)

winapps.txt

[RohanBhattacharyya]

I have found the source of the error. It appears that xfreerdp3 cannot work with multimon when fractional scaling is enabled. I am using KDE with CachyOS. Here is the debug xfreerdp3 output:

rohan@pavillion-cachy ~> xfreerdp3 /u:"rohan" /p:"root" /v:127.0.0.1 /cert:tofu /multimon
[17:52:04:225] [8396:000020ce] [WARN][com.freerdp.client.x11] - [load_map_from_xkbfile]:     : keycode: 0x08 -> no RDP scancode found
[17:52:04:225] [8396:000020ce] [WARN][com.freerdp.client.x11] - [load_map_from_xkbfile]: ZEHA: keycode: 0x5D -> no RDP scancode found
[17:52:04:225] [8396:000020ce] [ERROR][com.freerdp.settings] - [monitor_has_gaps]: Monitor configuration has gaps! Monitor 0 does not have any neighbor
[17:52:04:225] [8396:000020ce] [ERROR][com.freerdp.settings] - [freerdp_settings_check_client_after_preconnect]: Invalid or unsupported monitor configuration detected
[17:52:04:225] [8396:000020ce] [ERROR][com.freerdp.settings] - [freerdp_settings_check_client_after_preconnect]: Check if the configuration is valid.
[17:52:04:225] [8396:000020ce] [ERROR][com.freerdp.settings] - [freerdp_settings_check_client_after_preconnect]: If you suspect a bug create a new issue at https://github.com/FreeRDP/FreeRDP/issues/new
[17:52:04:225] [8396:000020ce] [ERROR][com.freerdp.settings] - [freerdp_settings_check_client_after_preconnect]: Provide at least the following log lines detailing your monitor configuration:
[17:52:04:225] [8396:000020ce] [ERROR][com.freerdp.settings] - [log_monitor_configuration]: [BEGIN] MonitorDefArray[2]
[17:52:04:225] [8396:000020ce] [ERROR][com.freerdp.settings] - [log_monitor]: [0] [primary] {0x0-2560x1600} [0] {345x215, orientation: 63, desktopScale: 0, deviceScale: 0}
[17:52:04:225] [8396:000020ce] [ERROR][com.freerdp.settings] - [log_monitor]: [1] [       ] {2561x0-2560x1600} [1] {345x215, orientation: 0, desktopScale: 0, deviceScale: 0}
[17:52:04:225] [8396:000020ce] [ERROR][com.freerdp.settings] - [log_monitor_configuration]: [END] MonitorDefArray[2]
[17:52:04:225] [8396:000020ce] [ERROR][com.freerdp.core] - [freerdp_connect_begin]: ERRCONNECT_PRE_CONNECT_FAILED [0x00020001]
[17:52:04:225] [8396:000020ce] [ERROR][com.freerdp.core] - [freerdp_connect_begin]: freerdp_pre_connect failed: CLIENT_STATE_PRECONNECT_PASSED
rohan@pavillion-cachy ~ [SIGFPE]>

From what I can tell, gaps between monitors are created at fractional scaling values. Values such as 150% do not work, but 100% and 200% work. Is there any luck getting multimon at 150% working?

[oskardotglobal]

You're gonna have to open an issue with FreeRDP if updating FreeRDP doesn't help

[RohanBhattacharyya]

I've asked in their matrix channel. It appears that this is a bug with KDE. https://bugs.kde.org/show_bug.cgi?id=506097

[RohanBhattacharyya]

@oskardotglobal I wanted to add that at one point, multimon, winapps, and fractional scaling all worked.

[oskardotglobal]

What FreeRDP version are you running

[RohanBhattacharyya]

I'm using 3.16.0