$ WLOG_LEVEL=DEBUG flatpak run com.freerdp.FreeRDP /u:<username> /v:<server ip>
[17:34:16:902] [2:00000002] [WARN][com.freerdp.client.common.cmdline] - [freerdp_client_warn_experimental]: [experimental] sdl-freerdp client is currently experimental!
[17:34:16:902] [2:00000002] [WARN][com.freerdp.client.common.cmdline] - [freerdp_client_warn_experimental]:  If problems occur please check https://github.com/FreeRDP/FreeRDP/issues for known issues or create a new one!
[17:34:16:902] [2:00000002] [WARN][com.freerdp.client.common.cmdline] - [freerdp_client_warn_experimental]:  Developers hang out in https://matrix.to/#/#FreeRDP:matrix.org?via=matrix.org - dont hesitate to ask some questions. (replies might take some time depending on your timezone)
[17:34:16:902] [2:00000002] [DEBUG][com.freerdp.utils.signal] - [freerdp_handle_signals]: Registering signal hook...
[17:34:16:920] [2:00000002] [DEBUG][com.freerdp.client.common.cmdline] - [freerdp_client_detect_command_line]: windows: 0/1 posix: -1000/0
[17:34:16:920] [2:00000002] [DEBUG][com.freerdp.client.common] - [freerdp_client_settings_parse_command_line]: This is 3.3.0 Build configuration: BUILD_TESTING=OFF WINPR_HAVE_AIO_H=1 WINPR_HAVE_EXECINFO_BACKTRACE=1 WINPR_HAVE_EXECINFO_BACKTRACE_SYMBOLS=1 WINPR_HAVE_EXECINFO_BACKTRACE_SYMBOLS_FD=1 WINPR_HAVE_EXECINFO_HEADER=1 WINPR_HAVE_FCNTL_H=1 WINPR_HAVE_GETLOGIN_R=1 WINPR_HAVE_GETPWUID_R=1 WINPR_HAVE_INTTYPES_H=1 WINPR_HAVE_POLL_H=1 WINPR_HAVE_PTHREAD_MUTEX_TIMEDLOCK_LIB=1 WINPR_HAVE_PTHREAD_MUTEX_TIMEDLOCK_LIBS= WINPR_HAVE_PTHREAD_MUTEX_TIMEDLOCK_SYMBOL=1 WINPR_HAVE_STDBOOL_H=1 WINPR_HAVE_STDINT_H=1 WINPR_HAVE_STRNDUP=1 WINPR_HAVE_SYSLOG_H=1 WINPR_HAVE_SYS_EVENTFD_H=1 WINPR_HAVE_SYS_FILIO_H= WINPR_HAVE_SYS_SELECT_H=1 WINPR_HAVE_SYS_SOCKIO_H= WINPR_HAVE_SYS_TIMERFD_H=1 WINPR_HAVE_TM_GMTOFF=1 WINPR_HAVE_UNISTD_H=1 WINPR_HAVE_UNWIND_H=1 WITH_AAD=ON WITH_ABSOLUTE_PLUGIN_LOAD_PATHS=ON WITH_ADD_PLUGIN_TO_RPATH=OFF WITH_ALSA=ON WITH_BINARY_VERSIONING=OFF WITH_CAIRO=OFF WITH_CCACHE=ON WITH_CHANNELS=ON WITH_CLANG_FORMAT=ON WITH_CLIENT=ON WITH_CLIENT_AVAILABLE=1 WITH_CLIENT_CHANNELS=ON WITH_CLIENT_CHANNELS_AVAILABLE=1 WITH_CLIENT_COMMON=ON WITH_CLIENT_INTERFACE=OFF WITH_CLIENT_SDL=ON WITH_CLIENT_SDL_AVAILABLE=1 WITH_CUPS=ON WITH_DEBUG_ALL=OFF WITH_DEBUG_CAPABILITIES=OFF WITH_DEBUG_CERTIFICATE=OFF WITH_DEBUG_CHANNELS=OFF WITH_DEBUG_CLIPRDR=OFF WITH_DEBUG_CODECS=OFF WITH_DEBUG_DVC=OFF WITH_DEBUG_EVENTS=OFF WITH_DEBUG_KBD=OFF WITH_DEBUG_LICENSE=OFF WITH_DEBUG_MUTEX=OFF WITH_DEBUG_NEGO=OFF WITH_DEBUG_NLA=OFF WITH_DEBUG_NTLM=OFF WITH_DEBUG_RAIL=OFF WITH_DEBUG_RDP=OFF WITH_DEBUG_RDPDR=OFF WITH_DEBUG_RDPEI=OFF WITH_DEBUG_RDPGFX=OFF WITH_DEBUG_REDIR=OFF WITH_DEBUG_RFX=OFF WITH_DEBUG_RINGBUFFER=OFF WITH_DEBUG_SCARD=OFF WITH_DEBUG_SCHANNEL=OFF WITH_DEBUG_SDL_EVENTS=OFF WITH_DEBUG_SDL_KBD_EVENTS=OFF WITH_DEBUG_SND=OFF WITH_DEBUG_SVC=OFF WITH_DEBUG_SYMBOLS=OFF WITH_DEBUG_THREADS=OFF WITH_DEBUG_TIMEZONE=OFF WITH_DEBUG_TRANSPORT=OFF WITH_DEBUG_TSG=OFF WITH_DEBUG_TSMF=OFF WITH_DEBUG_TSMF_AVAILABLE=0 WITH_DEBUG_URBDRC=OFF WITH_DEBUG_WND=OFF WITH_DEBUG_X11=OFF WITH_DEBUG_X11_LOCAL_MOVESIZE=OFF WITH_DEBUG_XV=OFF WITH_DSP_EXPERIMENTAL=OFF WITH_DSP_FFMPEG=ON WITH_DSP_FFMPEG_AVAILABLE=1 WITH_EVENTFD_READ_WRITE=1 WITH_FAAC=OFF WITH_FAAD2=OFF WITH_FFMPEG=ON WITH_FREERDP_DEPRECATED=OFF WITH_FREERDP_DEPRECATED_COMMANDLINE=OFF WITH_FUSE=OFF WITH_GFX_H264=ON WITH_GPROF=OFF WITH_GSM=OFF WITH_INTERNAL_MD4=OFF WITH_INTERNAL_MD5=OFF WITH_INTERNAL_RC4=OFF WITH_IPP=OFF WITH_JPEG=OFF WITH_KRB5=ON WITH_KRB5_NO_NTLM_FALLBACK=OFF WITH_LAME=OFF WITH_LIBRARY_VERSIONING=ON WITH_LIBRESSL=OFF WITH_LODEPNG=OFF WITH_MACAUDIO=OFF WITH_MACAUDIO_AVAILABLE=0 WITH_MANPAGES=OFF WITH_MBEDTLS=OFF WITH_NATIVE_SSPI=OFF WITH_NEON=OFF WITH_OPENCL=OFF WITH_OPENH264=OFF WITH_OPENSC_PKCS11_LINKED=OFF WITH_OPENSSL=ON WITH_OPUS=OFF WITH_OSS=OFF WITH_PCSC=ON WITH_PKCS11=ON WITH_PLATFORM_SERVER=ON WITH_POLL=ON WITH_PROFILER=OFF WITH_PROXY=ON WITH_PROXY_APP=ON WITH_PROXY_EMULATE_SMARTCARD=OFF WITH_PROXY_MODULES=ON WITH_PULSE=ON WITH_RDTK=ON WITH_SAMPLE=ON WITH_SANITIZE_ADDRESS=OFF WITH_SANITIZE_ADDRESS_AVAILABLE=1 WITH_SANITIZE_MEMORY=OFF WITH_SANITIZE_MEMORY_AVAILABLE=1 WITH_SANITIZE_THREAD=OFF WITH_SANITIZE_THREAD_AVAILABLE=1 WITH_SDL_IMAGE_DIALOGS=ON WITH_SDL_LINK_SHARED=ON WITH_SERVER=ON WITH_SERVER_CHANNELS=ON WITH_SERVER_INTERFACE=ON WITH_SHADOW=ON WITH_SMARTCARD_EMULATE=ON WITH_SMARTCARD_INSPECT=OFF WITH_SMARTCARD_PCSC=ON WITH_SOXR=OFF WITH_SSE2=OFF WITH_SWSCALE=ON WITH_SYSTEMD=ON WITH_THIRD_PARTY=OFF WITH_UNICODE_BUILTIN=OFF WITH_URIPARSER=ON WITH_VAAPI=OFF WITH_VAAPI_AVAILABLE=1 WITH_VALGRIND_MEMCHECK=OFF WITH_VALGRIND_MEMCHECK_AVAILABLE=1 WITH_VERBOSE_WINPR_ASSERT=ON WITH_VIDEO_FFMPEG=ON WITH_VIDEO_FFMPEG_AVAILABLE=1 WITH_WAYLAND=ON WITH_WEBVIEW=OFF WITH_WINPR_DEPRECATED=OFF WITH_WINPR_TOOLS=ON WITH_WIN_CONSOLE=ON WITH_X11=ON WITH_XCURSOR=ON WITH_XEXT=ON WITH_XFIXES=ON WITH_XI=ON WITH_XINERAMA=ON WITH_XRANDR=ON WITH_XRENDER=ON WITH_XV=ON
Build type:          RelWithDebInfo
CFLAGS:              -O2 -pipe -g -Wp,-D_FORTIFY_SOURCE=2 -Wp,-D_GLIBCXX_ASSERTIONS -fexceptions -fstack-protector-strong -grecord-gcc-switches -fasynchronous-unwind-tables -fstack-clash-protection -fcf-protection -fno-omit-frame-pointer -Wall -Wpedantic -Wno-padded -Wno-cast-align -Wno-declaration-after-statement -fPIC -Wall -fvisibility=hidden -Wimplicit-function-declaration -Wredundant-decls -g -fno-omit-frame-pointer
Compiler:            GNU, 13.2.0
Target architecture: x64

[17:34:16:920] [2:00000004] [DEBUG][com.freerdp.core] - [freerdp_connect_begin]: resetting error state
[17:34:16:921] [2:00000004] [DEBUG][com.freerdp.client.SDL] - [winpr_LogOutputFunction]: [SDL_LOG_CATEGORY_ERROR] Couldn't get DPI
[17:34:16:921] [2:00000004] [DEBUG][com.freerdp.client.SDL] - [winpr_LogOutputFunction]: [SDL_LOG_CATEGORY_ERROR] Couldn't get DPI
[17:34:16:921] [2:00000004] [DEBUG][com.freerdp.client.SDL] - [winpr_LogOutputFunction]: [SDL_LOG_CATEGORY_ERROR] Couldn't get DPI
[17:34:16:921] [2:00000004] [INFO][com.freerdp.client.SDL] - [sdl_pre_connect]: Update size to 1024x768
[17:34:16:921] [2:00000004] [DEBUG][com.freerdp.client.common.cmdline] - [freerdp_client_load_static_channel_addin]: loading channelEx rdpdr
[17:34:16:921] [2:00000004] [DEBUG][com.freerdp.client.common.cmdline] - [freerdp_client_load_static_channel_addin]: loading channelEx rdpsnd
[17:34:16:921] [2:00000004] [DEBUG][com.freerdp.channels.channels.cliprdr.client] - [cliprdr_VirtualChannelEntryEx]: VirtualChannelEntryEx
[17:34:16:921] [2:00000004] [DEBUG][com.freerdp.client.common.cmdline] - [freerdp_client_load_static_channel_addin]: loading channelEx cliprdr
[17:34:16:921] [2:00000004] [DEBUG][com.freerdp.channels.drdynvc.client] - [drdynvc_VirtualChannelEntryEx]: VirtualChannelEntryEx
[17:34:16:921] [2:00000004] [DEBUG][com.freerdp.client.common.cmdline] - [freerdp_client_load_static_channel_addin]: loading channelEx drdynvc
[17:34:16:921] [2:00000002] [DEBUG][com.freerdp.client.SDL] - [winpr_LogOutputFunction]: [SDL_LOG_CATEGORY_ERROR] Parameter 'renderer' is invalid
[17:34:16:921] [2:00000002] [DEBUG][com.freerdp.client.SDL] - [winpr_LogOutputFunction]: [SDL_LOG_CATEGORY_ERROR] Invalid window
[17:34:16:925] [2:00000004] [DEBUG][com.freerdp.primitives] - [primitives_autodetect_best]: primitives benchmark: only one backend, skipping...
[17:34:16:925] [2:00000004] [DEBUG][com.freerdp.primitives] - [primitives_autodetect_best]: primitives autodetect, using generic
[17:34:16:960] [2:00000004] [DEBUG][com.freerdp.core.nego] - [nego_set_negotiation_enabled]: Enabling security layer negotiation: TRUE
[17:34:16:960] [2:00000004] [DEBUG][com.freerdp.core.nego] - [nego_set_restricted_admin_mode_required]: Enabling restricted admin mode: FALSE
[17:34:16:960] [2:00000004] [DEBUG][com.freerdp.core.nego] - [nego_enable_rdp]: Enabling RDP security: TRUE
[17:34:16:960] [2:00000004] [DEBUG][com.freerdp.core.nego] - [nego_enable_tls]: Enabling TLS security: TRUE
[17:34:16:960] [2:00000004] [DEBUG][com.freerdp.core.nego] - [nego_enable_nla]: Enabling NLA security: TRUE
[17:34:16:960] [2:00000004] [DEBUG][com.freerdp.core.nego] - [nego_enable_ext]: Enabling NLA extended security: FALSE
[17:34:16:960] [2:00000004] [DEBUG][com.freerdp.core.nego] - [nego_enable_rdstls]: Enabling RDSTLS security: FALSE
[17:34:16:960] [2:00000004] [DEBUG][com.freerdp.core.nego] - [nego_enable_aad]: Enabling RDS AAD security: FALSE
[17:34:16:960] [2:00000004] [DEBUG][com.freerdp.core.rdp] - [rdp_client_transition_to_state][0x55875b971dc0]: CONNECTION_STATE_INITIAL --> CONNECTION_STATE_NEGO
[17:34:16:960] [2:00000004] [DEBUG][com.freerdp.core] - [freerdp_tcp_is_hostname_resolvable]: resetting error state
[17:34:16:960] [2:00000004] [DEBUG][com.freerdp.core] - [freerdp_tcp_default_connect]: resetting error state
[17:34:16:960] [2:00000004] [DEBUG][com.freerdp.core] - [freerdp_tcp_default_connect]: connecting to peer <server ip>
[17:34:16:971] [2:00000004] [DEBUG][com.freerdp.core.nego] - [nego_connect]: state: NEGO_STATE_NLA
[17:34:16:971] [2:00000004] [DEBUG][com.freerdp.core.nego] - [nego_attempt_nla]: Attempting NLA security
[17:34:16:971] [2:00000004] [DEBUG][com.freerdp.core.nego] - [nego_send_negotiation_request]: RequestedProtocols: 3
[17:34:16:972] [2:00000004] [DEBUG][com.freerdp.core.nego] - [nego_process_negotiation_response]: RDP_NEG_RSP::flags = { [0x01] |EXTENDED_CLIENT_DATA_SUPPORTED }
[17:34:16:972] [2:00000004] [DEBUG][com.freerdp.core.nego] - [nego_recv]: selected_protocol: 0
[17:34:16:972] [2:00000004] [DEBUG][com.freerdp.core.nego] - [nego_attempt_nla]: state: NEGO_STATE_FINAL
[17:34:16:972] [2:00000004] [DEBUG][com.freerdp.core.nego] - [nego_connect]: Negotiated RDP security
[17:34:16:972] [2:00000004] [DEBUG][com.freerdp.core.nego] - [nego_try_connect]: nego_security_connect with PROTOCOL_RDP
MESA: error: ZINK: failed to choose pdev
libEGL warning: egl: failed to create dri2 screen
[17:34:16:72] [2:00000002] [INFO][com.freerdp.client.SDL] - [winpr_LogOutputFunction]: [SDL_LOG_CATEGORY_RENDER] OpenGL shaders: ENABLED
[17:34:16:72] [2:00000002] [INFO][com.freerdp.client.SDL] - [winpr_LogOutputFunction]: [SDL_LOG_CATEGORY_RENDER] Created renderer: opengl
[17:34:16:137] [2:00000002] [INFO][com.freerdp.client.SDL] - [winpr_LogOutputFunction]: [SDL_LOG_CATEGORY_RENDER] OpenGL shaders: ENABLED
[17:34:16:137] [2:00000002] [INFO][com.freerdp.client.SDL] - [winpr_LogOutputFunction]: [SDL_LOG_CATEGORY_RENDER] Created renderer: opengl
[17:34:23:327] [2:00000004] [DEBUG][com.freerdp.core.rdp] - [rdp_client_transition_to_state][0x55875b971dc0]: CONNECTION_STATE_NEGO --> CONNECTION_STATE_MCS_CREATE_REQUEST
[17:34:23:327] [2:00000004] [DEBUG][com.freerdp.core.gcc] - [gcc_write_client_core_data]: Sending highColorDepth=HIGH_COLOR_24BPP, supportedColorDepths=RNS_UD_32BPP_SUPPORT|RNS_UD_24BPP_SUPPORT|RNS_UD_16BPP_SUPPORT|RNS_UD_15BPP_SUPPORT, earlyCapabilityFlags=RNS_UD_CS_WANT_32BPP_SESSION|RNS_UD_CS_RELATIVE_MOUSE_INPUT|RNS_UD_CS_VALID_CONNECTION_TYPE|RNS_UD_CS_SUPPORT_NETCHAR_AUTODETECT|RNS_UD_CS_SUPPORT_DYNVC_GFX_PROTOCOL|RNS_UD_CS_SUPPORT_HEARTBEAT_PDU|RNS_UD_CS_SUPPORT_SKIP_CHANNELJOIN|[0x00000db2]
[17:34:23:328] [2:00000004] [DEBUG][com.freerdp.core.rdp] - [rdp_client_transition_to_state][0x55875b971dc0]: CONNECTION_STATE_MCS_CREATE_REQUEST --> CONNECTION_STATE_MCS_CREATE_RESPONSE
[17:34:23:331] [2:00000004] [DEBUG][com.freerdp.core.gcc] - [gcc_read_server_security_data]: Server rdp encryption method: 128BIT
[17:34:23:331] [2:00000004] [ERROR][com.freerdp.core.gcc] - [gcc_read_conference_create_response]: gcc_read_conference_create_response: gcc_read_server_data_blocks failed
[17:34:23:331] [2:00000004] [ERROR][com.freerdp.core] - [mcs_recv_connect_response]: gcc_read_conference_create_response failed
[17:34:23:331] [2:00000004] [ERROR][com.freerdp.core.rdp] - [rdp_recv_callback_int][0x55875b971dc0]: mcs_recv_connect_response failure
[17:34:23:331] [2:00000004] [ERROR][com.freerdp.core.rdp] - [rdp_recv_callback_int][0x55875b971dc0]: CONNECTION_STATE_MCS_CREATE_RESPONSE status STATE_RUN_FAILED [-1]
[17:34:23:331] [2:00000004] [ERROR][com.freerdp.core.transport] - [transport_check_fds]: transport_check_fds: transport->ReceiveCallback() - STATE_RUN_FAILED [-1]
[17:34:23:331] [2:00000004] [DEBUG][com.freerdp.core.rdp] - [rdp_check_fds][0x55875b971dc0]: transport_check_fds() - -1
[17:34:23:331] [2:00000004] [ERROR][com.freerdp.core] - [rdp_client_wait_for_activation]: ERRCONNECT_CONNECT_TRANSPORT_FAILED [0x0002000D]
[17:34:23:331] [2:00000004] [DEBUG][com.freerdp.core.rdp] - [rdp_finalize_reset_flags][0x55875b971dc0]: [CONNECTION_STATE_MCS_CREATE_RESPONSE] reset finalize_sc_pdus
[17:34:23:331] [2:00000004] [DEBUG][com.freerdp.core.rdp] - [rdp_client_transition_to_state][0x55875b971dc0]: CONNECTION_STATE_MCS_CREATE_RESPONSE --> CONNECTION_STATE_INITIAL