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Ahoj, měnil jsem grafiku, z ATI na GeForce GTX 1080, na upgradovaném Mint 20 (z 19.3) na tomto systému se mě nepodařilo rozchodit proprietální nvidia driver (s nouveau Xorg to jelo blbě a systém si stěžoval), ale DVB-T2 na původní ATIně jela perfektně. Tak jsem udělal čistou instalaci

petr@nebula:~$ uname -a
Linux nebula 5.4.0-40-generic #44-Ubuntu SMP Tue Jun 23 00:01:04 UTC 2020 x86_64 x86_64 x86_64 GNU/Linux

nainstaloval doporučený nvidia-driver-440, TV tuner systém poznal tak jsem jen doinstaloval chybějící firmware

dmesg | grep dvb
[    6.453739] usb 2-1: dvb_usb_v2: found a 'MyGica Mini DVB-T2 USB Stick T230C v2' in warm state
[    6.453923] usb 2-1: dvb_usb_v2: will pass the complete MPEG2 transport stream to the software demuxer
[    6.453938] dvbdev: DVB: registering new adapter (MyGica Mini DVB-T2 USB Stick T230C v2)
[    6.454661] dvbdev: dvb_create_media_entity: media entity 'dvb-demux' registered.
[    6.496612] dvbdev: dvb_create_media_entity: media entity 'Silicon Labs Si2168' registered.
[    6.533889] rc rc0: lirc_dev: driver dvb_usb_dvbsky registered at minor = 0, scancode receiver, no transmitter
[    6.534036] usb 2-1: dvb_usb_v2: schedule remote query interval to 300 msecs
[    6.534040] usb 2-1: dvb_usb_v2: 'MyGica Mini DVB-T2 USB Stick T230C v2' successfully initialized and connected
[    6.534093] usbcore: registered new interface driver dvb_usb_dvbsky
[  160.668248] si2168 1-0064: Direct firmware load for dvb-demod-si2168-d60-01.fw failed with error -2
[  160.668252] si2168 1-0064: firmware file 'dvb-demod-si2168-d60-01.fw' not found
[  160.685561] si2157 2-0060: Direct firmware load for dvb-tuner-si2141-a10-01.fw failed with error -2
[  160.685564] si2157 2-0060: firmware file 'dvb-tuner-si2141-a10-01.fw' not found


petr@nebula:~$ dmesg | grep dvb
[    6.620410] usb 2-1: dvb_usb_v2: found a 'MyGica Mini DVB-T2 USB Stick T230C v2' in warm state
[    6.620571] usb 2-1: dvb_usb_v2: will pass the complete MPEG2 transport stream to the software demuxer
[    6.620586] dvbdev: DVB: registering new adapter (MyGica Mini DVB-T2 USB Stick T230C v2)
[    6.621153] dvbdev: dvb_create_media_entity: media entity 'dvb-demux' registered.
[    6.659329] dvbdev: dvb_create_media_entity: media entity 'Silicon Labs Si2168' registered.
[    6.697225] rc rc0: lirc_dev: driver dvb_usb_dvbsky registered at minor = 0, scancode receiver, no transmitter
[    6.697389] usb 2-1: dvb_usb_v2: schedule remote query interval to 300 msecs
[    6.697394] usb 2-1: dvb_usb_v2: 'MyGica Mini DVB-T2 USB Stick T230C v2' successfully initialized and connected
[    6.697450] usbcore: registered new interface driver dvb_usb_dvbsky
[   35.767322] si2168 1-0064: downloading firmware from file 'dvb-demod-si2168-d60-01.fw'

No a DVB-T2 nefunguje ani v Kaffeine ani ve VLC, problém s hevc bufferem, DVB-T kanály normálně jedou u DVB-T2 jen zvuk a asi prvních třicet snímků pak se obraz kousne.

VLC:

/usr/bin/vlc /home/petr/playlist.xspf
VLC media player 3.0.9.2 Vetinari (revision 3.0.9.2-0-gd4c1aefe4d)
[000055cb79c8f5b0] main libvlc: Spouštím přehrávač VLC s výchozím rozhraním. Přejete-li si spouštět přehrávač VLC bez rozhraní, použijte příkaz 'cvlc'.
qt5ct: using qt5ct plugin
qt5ct: D-Bus global menu: no
qt5ct: D-Bus system tray: yes
[00007fa7680d5670] mpeg4audio packetizer: AAC channels: 2 samplerate: 48000
[00007fa768c025d0] main decoder error: buffer deadlock prevented
[00007fa768c025d0] avcodec decoder: Using NVIDIA VDPAU Driver Shared Library  440.100  Fri May 29 08:12:22 UTC 2020 for hardware decoding
[00007fa768c025d0] avcodec decoder error: hardware acceleration picture allocation failed
[hevc @ 0x7fa7880520c0] get_buffer() failed
[hevc @ 0x7fa7880520c0] thread_get_buffer() failed
[hevc @ 0x7fa788062940] Could not find ref with POC -36
[00007fa768c025d0] avcodec decoder error: avcodec_send_packet critical error
[00007fa768c08390] ts demux error: libdvbpsi error (EIT decoder): 'version_number' differs whereas no discontinuity has occurred

Kaffeine:

petr@nebula:~$ kaffeine
...
[00007f73340faa40] mpeg4audio packetizer: AAC channels: 2 samplerate: 48000
[00007f7334031070] main decoder error: buffer deadlock prevented
[00007f7334031070] avcodec decoder: Using NVIDIA VDPAU Driver Shared Library  440.100  Fri May 29 08:12:22 UTC 2020 for hardware decoding
[00007f7334031070] avcodec decoder error: hardware acceleration picture allocation failed
[hevc @ 0x7f731c04ec00] get_buffer() failed
[hevc @ 0x7f731c04ec00] thread_get_buffer() failed
[hevc @ 0x7f731c05f280] Could not find ref with POC -92
[00007f7334031070] avcodec decoder error: avcodec_send_packet critical error

Xorg log v příloze.

Co s tím?