krdp报错：ERRINFO_GRAPHICS_SUBSYSTEM_FAILED (0x0000112F):The server-side graphics subsystem is in an error state and unable to continue graphics encoding.

[gemfield]

当使用krdc客户端连接krdp服务时，krdp服务报错：

kpipewire_vaapi_logging: VAAPI: entrypoint 6 of profile 13 is not supported by the device "/dev/dri/renderD128"
[18:38:34:171] [499202:499261] [WARN][com.winpr.negotiate] - AcceptSecurityContext status SEC_I_CONTINUE_NEEDED [0x00090312]
[18:38:34:272] [499202:499261] [WARN][com.winpr.negotiate] - AcceptSecurityContext status SEC_I_COMPLETE_NEEDED [0x00090313]
[18:38:34:372] [499202:499261] [INFO][com.freerdp.core.connection] - Accepted client: CivilNet
[18:38:34:373] [499202:499261] [INFO][com.freerdp.core.connection] - Accepted channels:
[18:38:34:373] [499202:499261] [INFO][com.freerdp.core.connection] -  rdpdr
[18:38:34:373] [499202:499261] [INFO][com.freerdp.core.connection] -  rdpsnd
[18:38:34:373] [499202:499261] [INFO][com.freerdp.core.connection] -  cliprdr
[18:38:34:373] [499202:499261] [INFO][com.freerdp.core.connection] -  drdynvc
[18:38:34:373] [499202:499261] [INFO][com.freerdp.core.gcc] - Active rdp encryption level: NONE
[18:38:34:373] [499202:499261] [INFO][com.freerdp.core.gcc] - Selected rdp encryption method: NONE
org.kde.krdp: New client connected:  UNIX platform Unspecified version
org.kde.krdp: Video stream initialized
org.kde.krdp: Received caps:
org.kde.krdp:   RDPGFX_CAPVERSION_8 AVC: false YUV420: false
org.kde.krdp:   RDPGFX_CAPVERSION_81 AVC: false YUV420: false
org.kde.krdp:   RDPGFX_CAPVERSION_10 AVC: false YUV420: false
org.kde.krdp:   RDPGFX_CAPVERSION_101 AVC: true YUV420: false
org.kde.krdp:   RDPGFX_CAPVERSION_102 AVC: false YUV420: false
org.kde.krdp:   RDPGFX_CAPVERSION_103 AVC: false YUV420: false
org.kde.krdp:   RDPGFX_CAPVERSION_104 AVC: false YUV420: true
org.kde.krdp:   RDPGFX_CAPVERSION_105 AVC: false YUV420: true
org.kde.krdp:   RDPGFX_CAPVERSION_106 AVC: false YUV420: true
org.kde.krdp:   UNKNOWN_VERSION AVC: false YUV420: false
org.kde.krdp:   RDPGFX_CAPVERSION_107 AVC: false YUV420: true
org.kde.krdp: Client does not support H.264 in YUV420 mode!
[18:38:35:534] [499202:499365] [INFO][com.freerdp.core] - ERRINFO_GRAPHICS_SUBSYSTEM_FAILED (0x0000112F):The server-side graphics subsystem is in an error state and unable to continue graphics encoding.
[18:38:35:534] [499202:499365] [ERROR][com.freerdp.core] - rdp_set_error_info:freerdp_set_last_error_ex ERRINFO_GRAPHICS_SUBSYSTEM_FAILED [0x0001112F]
[18:38:35:535] [499202:499365] [ERROR][com.freerdp.channels.rdpgfx.server] - context->CapsAdvertise failed with error 20
[18:38:35:535] [499202:499365] [ERROR][com.freerdp.channels.rdpgfx.server] - rdpgfx_recv_caps_advertise_pdu failed with error 20!
[18:38:35:535] [499202:499365] [ERROR][com.freerdp.channels.rdpgfx.server] - Error while parsing GFX cmdId: RDPGFX_CMDID_CAPSADVERTISE (0x0012)
[18:38:35:535] [499202:499365] [ERROR][com.freerdp.channels.rdpgfx.server] - rdpgfx_server_receive_pdu failed with error 20!
[18:38:35:535] [499202:499365] [ERROR][com.freerdp.channels.rdpgfx.server] - rdpgfx_server_handle_messages failed with error 20
[18:38:35:536] [499202:499261] [ERROR][com.freerdp.core.transport] - BIO_read returned a system error 0: Success
org.kde.krdp: Unable to check file descriptor
org.kde.krdp: Closing session
org.kde.krdp: Closing Freedesktop Portal Session

[gemfield]

这是因为krdc客户端目前不支持H.264 in YUV420 mode。使用remmina客户端的最新版本（1.4.36，）就可以。注意，最新版本目前只有flatpak版本：

sudo apt install flatpak
flatpak remote-add --if-not-exists flathub https://flathub.org/repo/flathub.flatpakrepo
flatpak install flathub org.remmina.Remmina
flatpak run org.remmina.Remmina

运行起来后，服务端的krdp日志如下：

12月 15 19:57:42 CivilNet krdpserver[508489]: [19:57:42:291] [508489:508520] [WARN][com.winpr.negotiate] - AcceptSecurityContext status SEC_I_CONTINUE_NEEDED [0x00090312]
12月 15 19:57:42 CivilNet krdpserver[508489]: [19:57:42:391] [508489:508520] [WARN][com.winpr.negotiate] - AcceptSecurityContext status SEC_I_COMPLETE_NEEDED [0x00090313]
12月 15 19:57:43 CivilNet krdpserver[508489]: org.kde.krdp: New client connected:  UNIX platform Unspecified version
12月 15 19:57:43 CivilNet krdpserver[508489]: org.kde.krdp: Video stream initialized
12月 15 19:57:43 CivilNet krdpserver[508489]: org.kde.krdp: Received caps:
12月 15 19:57:43 CivilNet krdpserver[508489]: org.kde.krdp:   RDPGFX_CAPVERSION_8 AVC: false YUV420: false
12月 15 19:57:43 CivilNet krdpserver[508489]: org.kde.krdp:   RDPGFX_CAPVERSION_81 AVC: true YUV420: true
12月 15 19:57:43 CivilNet krdpserver[508489]: org.kde.krdp:   RDPGFX_CAPVERSION_10 AVC: true YUV420: false
12月 15 19:57:43 CivilNet krdpserver[508489]: org.kde.krdp:   RDPGFX_CAPVERSION_101 AVC: true YUV420: false
12月 15 19:57:43 CivilNet krdpserver[508489]: org.kde.krdp:   RDPGFX_CAPVERSION_102 AVC: true YUV420: false
12月 15 19:57:43 CivilNet krdpserver[508489]: org.kde.krdp:   RDPGFX_CAPVERSION_103 AVC: true YUV420: false
12月 15 19:57:43 CivilNet krdpserver[508489]: org.kde.krdp:   RDPGFX_CAPVERSION_104 AVC: true YUV420: true
12月 15 19:57:43 CivilNet krdpserver[508489]: org.kde.krdp:   RDPGFX_CAPVERSION_105 AVC: true YUV420: true
12月 15 19:57:43 CivilNet krdpserver[508489]: org.kde.krdp:   RDPGFX_CAPVERSION_106 AVC: true YUV420: true
12月 15 19:57:43 CivilNet krdpserver[508489]: org.kde.krdp:   UNKNOWN_VERSION AVC: false YUV420: false
12月 15 19:57:43 CivilNet krdpserver[508489]: org.kde.krdp:   RDPGFX_CAPVERSION_107 AVC: true YUV420: true
12月 15 19:57:43 CivilNet krdpserver[508489]: org.kde.krdp: Selected caps: RDPGFX_CAPVERSION_107
12月 15 19:57:43 CivilNet krdpserver[508489]: [Parsed_scale_vaapi_1 @ 0x71b61003f840] Failed to create processing pipeline config: 12 (the requested VAProfile is not supported).
12月 15 19:57:43 CivilNet krdpserver[508489]: [Parsed_scale_vaapi_1 @ 0x71b61003f840] Failed to configure output pad on Parsed_scale_vaapi_1
12月 15 19:57:43 CivilNet krdpserver[508489]: kpipewire_record_logging: Failed configuring filter graph
12月 15 19:57:43 CivilNet krdpserver[508489]: [libx264 @ 0x71b610413000] -qscale is ignored, -crf is recommended.
12月 15 19:57:43 CivilNet krdpserver[508489]: [libx264 @ 0x71b610413000] MB rate (33970000) > level limit (16711680)
12月 15 19:57:43 CivilNet krdpserver[508489]: [libx264 @ 0x71b610413000] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX FMA3 BMI2 AVX2
12月 15 19:57:43 CivilNet krdpserver[508489]: [libx264 @ 0x71b610413000] profile Constrained Baseline, level 6.2, 4:2:0, 8-bit
12月 15 19:57:43 CivilNet krdpserver[508489]: QObject: Cannot create children for a parent that is in a different thread.
                                               (Parent is QApplication(0x7ffe2b069fb0), parent's thread is QThread(0x570d7db65e60), current thread is QThread(0x71b618043e70)
12月 15 19:57:43 CivilNet krdpserver[508489]: kpipewire_dmabuf_logging: eglChooseConfig returned this many configs: 1
12月 15 19:58:15 CivilNet krdpserver[508489]: [19:58:15:696] [508489:508520] [ERROR][com.freerdp.core.peer] - peer_recv_callback: CONNECTION_STATE_ACTIVE - peer_recv_pdu() fail
12月 15 19:58:15 CivilNet krdpserver[508489]: [19:58:15:696] [508489:508520] [ERROR][com.freerdp.core.transport] - transport_check_fds: transport->ReceiveCallback() - -1
12月 15 19:58:15 CivilNet krdpserver[508489]: org.kde.krdp: Unable to check file descriptor
12月 15 19:58:15 CivilNet krdpserver[508489]: org.kde.krdp: Closing session
12月 15 19:58:15 CivilNet krdpserver[508489]: [libx264 @ 0x71b610413000] frame I:3     Avg QP:18.00  size:1316073
12月 15 19:58:15 CivilNet krdpserver[508489]: [libx264 @ 0x71b610413000] frame P:274   Avg QP:20.50  size: 55146
12月 15 19:58:15 CivilNet krdpserver[508489]: [libx264 @ 0x71b610413000] mb I  I16..4: 100.0%  0.0%  0.0%
12月 15 19:58:15 CivilNet krdpserver[508489]: [libx264 @ 0x71b610413000] mb P  I16..4:  2.5%  0.0%  0.0%  P16..4:  7.4%  0.0%  0.0%  0.0%  0.0%    skip:90.1%
12月 15 19:58:15 CivilNet krdpserver[508489]: [libx264 @ 0x71b610413000] coded y,uvDC,uvAC intra: 30.4% 27.9% 22.6% inter: 3.1% 4.9% 2.7%
12月 15 19:58:15 CivilNet krdpserver[508489]: [libx264 @ 0x71b610413000] i16 v,h,dc,p: 56% 34%  5%  6%
12月 15 19:58:15 CivilNet krdpserver[508489]: [libx264 @ 0x71b610413000] i8c dc,h,v,p: 58% 23% 16%  2%
12月 15 19:58:15 CivilNet krdpserver[508489]: [libx264 @ 0x71b610413000] kb/s:550421.38
12月 15 19:58:15 CivilNet krdpserver[508489]: org.kde.krdp: Closing Freedesktop Portal Session
12月 15 19:58:15 CivilNet kded6[2017]: Service  ":1.1329" unregistered