NextPVR Forums - Linux

automatic updates fail

Fri, 25 Sep 2026 18:34:39 +0000

Linux Mint 22.3 - Cinnamon 64-bit
Kernel 7.0.0-34-generic

I have dotnet 10.0.112

manual updates work fine.

I tried searching for similar issues...found a few, but no real help

Thank you
Sterling

logs-20260925-1303.zip (Size: 375.31 KB / Downloads: 2)

HDHomeRun can't find tuners

Tue, 01 Sep 2026 16:21:31 +0000

I moved my HDHomeRun to another subnet.
Changed my firewall rules...even setup UDP Broadcast Relay.

I can view TV on NextPVR.
I can direct browser to tuner and it displays information.

When I go to HDHomeRun app, it can't seem to find any tuners.

Not sure where to go from here.
I would like to rescan channels.

Any suggestions appreciated.
Sterling

HDHomeRun_09012026.png (Size: 18.33 KB / Downloads: 17)

Record playback manual skip ahead problem

Sat, 22 Aug 2026 02:14:33 +0000

In playing back a recording using the mouse to manually skip-ahead to a later time in the recorded video, strange things happen as shown in the attached Screenshot. First, the current time of the playback is shown on the left to be an impossible 44-minutes (00:44:22), because it is more than the length of a 30-minute recording. On the right, the total time of the recording is shown to be 33-minutes (00.32:59), which is correct including pre/post padding of 1 + 2 minutes.

Besides that, immediately after the skip ahead, the played-back video always shows the commercial and whatnot from the pre-padding time period. Then, if the skip-ahead is repeated, it always starts by showing the same beginning video segment. Eventually, If the skip_ahead is repeated (too often), then the recording playback ends. If recording playback is restarted (selecting "Resume"), then it restarts with the commercial that is at the beginning of the recording again.

The skip-ahead described above is done using the mouse's left button and pointer to drag the small circular time indicator to the right about an inch to a later time. Clicking the mouse pointer on the left and right arrows on the Screen has the same kind of problems, but are more confusing because of the small time increments.

I have not included the actual recording files because they seem to be OK. They [attachment=undefined]can be played back without any problems using the "Parole Media Player" which is included in the standard Stable Debian 12 Linux Distribution.

My Logged files are at URL: https://drive.google.com/file/d/1edM1Bm7...sp=sharing

RAK

Any experience using the server on a mobile?

Thu, 20 Aug 2026 11:29:47 +0000

Either directly as a linux app or via termux.

DVB-S2 scan succeeds, channels save to DB correctly, but playback fails

Thu, 20 Aug 2026 03:02:09 +0000

DVB-S2 scan succeeds, channels save to DB correctly, but playback fails — adapter0-DVB-S-channels.conf is never created.

NextPVR 7.1.1.260616, Ubuntu 25 (native install via nextpvr-helper.deb), tuner is a Hauppauge WinTV-Starburst2 (Montage M88RS6000 demod, cx23885 driver) — confirmed working via

Code:
dvbv5-zap

outside NextPVR (locks cleanly, correct signal/CN).
Channel scan (Single Satellite, custom Optus-D1-160.0E scan file) completes successfully — 21 channels appear correctly in the UI and in

Code:
npvr.db3

(

Code:
CHANNEL_MAPPING.tuning

is populated with correct DVB-S2 tuning XML for each channel).
Playback always fails with "No tuner was available for the requested channel."

Code:
device-adapter0.log

shows the actual cause:

Code:
[ERROR] Failed to get tuning params for (ChannelName) from /var/opt/nextpvr/adapter0-DVB-S-channels.conf

That file is never present on disk — confirmed via

Code:
find / -iname "*channels.conf"

after multiple fresh scans. The scan log shows a temporary

Code:
adapter0-DVB-S-channels-scan.conf

is used during scanning:

Code:
GOT: Channel config will be saved to /var/opt/nextpvr/adapter0-DVB-S-channels-scan.conf

but the final non-

Code:
-scan

file that

Code:
DeviceHostLinux

reads at stream-start time is never written by the save step.
Logs attached (Settings → About → Log Files).

logs-20260820-1501.zip (Size: 115.3 KB / Downloads: 3)

Can't update NextPVR to latest version.

Thu, 06 Aug 2026 04:16:19 +0000

According to the attached Screenshot of the upper left corner of the NextPVR "Settings" screen, I currently have version 7.0.5.260307 installed ,and would like to update to version 7.1.1.260616 as is also shown on the Settings screen as being the latest available. To do this from the Linux Command-Line, I basically followed the same procedure as for a first time installation of version 7.1.1 using the commands shown below.

1. curl https://nextpvr.com/nextpvr-helper.deb -O
2. dick@deb:~$ sudo apt install ./nextpvr-helper.deb --install-recommends
3. Reading package lists... Done
4.   Building dependency tree... Done
5. Reading state information... Done
6. Note, selecting 'nextpvr-helper' instead of './nextpvr-helper.deb' :~$ sudo apt install ./nextpvr-helper.deb --install-recommends
7. nextpvr-helper is already the newest version (3.1).
8. 0 upgraded, 0 newly installed, 0 to remove and 337 not upgraded.
9. dick@deb:~$

Lines 6 and 7 seem to suggest that the  Linux Installer (nextpvr-helper.deb) is confused between what is currently installed, and the version it should be installing.

I have no other way of determining what version is currently installed, so maybe the "Settings" screen is wrong, or the latest version is already installed. Any help in resolving this problem would be greatly appreciated.

The URL for my Log files is: https://drive.google.com/file/d/1r7fL2Fy...sp=sharing

Tnx,  RAK

  NextPVR-Version.png (Size: 39.17 KB / Downloads: 22)

Updating device and guide channels

Mon, 03 Aug 2026 21:34:31 +0000

Hello, my question is about how to add a channel to the NPVR program guide. I am using the current NPVR version on linux, I have an HDHR dual OTA tuner and I am subscribed to Schedules Direct, and I'm in the southwestern US. Out of the seventy or so channels that show up whenever I scan for channels on my TV, or in the HDHR app, I currently have 35 selected for the devices and the NPVR program guide. I have had this setup working for about a year and everything has been working fine. I need to add a newly created (in my area) OTA channel, and I don't want to screw up my current configuration when I do it.

The situation here is that network programming for CBS is leaving the channel it has been associated with forever and is being moved to a new digital sub channel (XX.4, for example) of another local channel that has always been associated with another major network, and it is this new digital channel (XX.4) that I need to add to the program guide. When the new channel was activated, my TV and the HDHR guide both picked it up immediately.

Using the web browser interface for my NPVR server, I went into settings and selected the devices tab. I selected one of the two HDHR devices (which currently shows the 35 channels I have selected for the guide), and clicked the "scan channels" button. In the guide selection I picked (as I always have) the Schedules Direct local broadcast listings for my zip code. The results were a total of 30 channels, a few of which are among the channels I currently have selected, most which are not currently selected. The newly created XX.4 channel does show up the scan. At this point I cancel out because I'm unsure of what to do. As I said, I don't want to screw up my current configuration.

If I select only the new XX.4 channel from this scan list, will the new channel be added to my currently selections, or will the current selections be erased and only the new channel show up in my channel choices for the guide?

Thank you in advance for your help.

nextpvr version 7.1 issues

Thu, 30 Jul 2026 01:31:33 +0000

I recently updated nextpvr from version 7.0 to version 7.1. Version 7.0 had been working properly with no issues at all. After I upgraded to version 7.1 I began to heve guide related issues. I got frustrated to the point where I reformatted the SSD and installed a brand new copy of Ubuntu 22.04.5 and nextpvr. The issues persisted. I next tried a clean install with Ubuntu 24.04.4 and nextpvr. Not only did the same issues persist but now there was an additional memory leak to contend with.

1. scheduled recordings are broken, I keep getting [Failed: HDHR stream not available]
2. When a TV show that I'm watching gets to the end, it stops and drops to the TV guide instead of playing the next show.
3. I can't get rid of the Silicondust EPG. The trash icon turns red when clicked, but nothing happens.
4. I have the timeshift setting at 120 minutes and the Ubuntu 24 memory leak occurs when a channel is left on for a day. Eventually the PC reboots due to "OOM" out of memory. I installed a dynamic memory manager "swapspace", which showed that virtual memory was getting over 300GB, dotnet appeared to be the issue.

Please find attached log files.

logs-20260729-1900.zip (Size: 554.87 KB / Downloads: 2)

VAAPI transcoding fails most of the time

Thu, 16 Jul 2026 00:56:31 +0000

Hey all,

I'm having an intermittent transcoding issue with NextPVR on Ubuntu 24.04 using VAAPI hardware acceleration. Most transcoding attempts fail, but occasionally they work without any changes.

Intel® Core™ i5-7500T CPU
Driver version: Intel iHD driver for Intel® Gen Graphics - 24.1.0 ()

I've verified permissions on /dev/dri/renderD128, the nextpvr user is in the video and render groups, and vainfo reports VAAPI support.
I've attached my latest logs (zip), which include both successful and failed transcoding attempts.
Any ideas on what I should check next?

logs-20260715-2047.zip (Size: 976.65 KB / Downloads: 1)

DVB-C DeviceHost cannot tune channels on Raspberry Pi 5

Sun, 05 Jul 2026 21:06:40 +0000

Hello ppl,

Summary
I am running the latest ARM64 Docker image of NextPVR on a Raspberry Pi 5.
The DVB-C scan succeeds and channels are imported correctly, but Live TV and recordings always fail with:

Code:
No tuner was available for the requested channel.

The DeviceHost logs show:

Code:
Failed to get tuning params for (...) from /config/adapterX-DVB-C-channels.conf

The file is either never generated by NextPVR or the DeviceHost expects a different format than the standard DVBv5 tuning files.

Environment
Hardware

Raspberry Pi 5
8 GB RAM
Hauppauge WinTV-dualHD (dual DVB-C/T/T2)
USB 3.0 connection

Code:
Linux dino-pi 6.18.33+rpt-rpi-2712
Debian 13 (Trixie)
64-bit ARM

Kernel:

Code:
Linux dino-pi 6.18.33+rpt-rpi-2712 #1 SMP PREEMPT Debian 1:6.18.33-1+rpt1

NextPVR
Docker image:

Code:
nextpvr/nextpvr_arm64:stable

Version:

Code:
7.1.1.260616

Docker Compose

Code:
nextpvr:
  image: nextpvr/nextpvr_arm64:stable
  container_name: nextpvr

  environment:
    - TZ=Europe/Vienna

  devices:
    - /dev/dvb/adapter0:/dev/dvb/adapter0
    - /dev/dvb/adapter1:/dev/dvb/adapter1

  volumes:
    - /opt/nextpvr/config:/config
    - /mnt/media/tv-aufnahmen:/recordings
    - /mnt/downloads:/buffer

  ports:
    - "8866:8866"

  restart: unless-stopped

DVB Devices detected
NextPVR detects both tuners correctly.

Code:
adapter0/frontend0 (Silicon Labs Si2168)
adapter1/frontend0 (Silicon Labs Si2168)

Both are shown as

Code:
Present = true
Enabled = true

Driver

Code:
em28xx
si2168

Kernel modules load correctly.
After reboot there are no I²C errors anymore.

Signal
Signal quality is 37dB.
Example:

Code:
C/N = 37.5 dB

DVB Utilities

Code:
dvbv5-zap

Tunes correctly.

Code:
w_scan

Works.
It finds over 220 TV services.

Code:
channels.conf

is generated.

NextPVR Scan
The channel scan succeeds.
Example from device log:

Code:
Scanning 474000000
Scanning 482000000
Scanning 490000000
Scanning 498000000
Scanning 506000000
Scanning 514000000
Scanning 522000000
Scanning 530000000
Scanning 538000000
...

Channels are found and imported.
Example:

Code:
Arena Sport 1 HD
Arena Sport 2 HD
Arena Sport 3 HD
Pink Kids
BN 2 TV
...

Around 220 channels are imported.

Problem
When starting Live TV:

Code:
No tuner was available for the requested channel.

nrecord.log

Code:
checking: adapter1/frontend0
enabled and present
has channel
live tv is possible

NextPVR launches DeviceHost correctly.
Example:

Code:
DeviceHostLinux
-listen:39823
-type:DVB-C
-device:"adapter1/frontend0"

DeviceHost receives:

Code:

  DVB-C
  Arena Sport 3 HD

    514000000OFF
  
  2320

DeviceHost error
Immediately afterwards:

Code:
Failed to get tuning params for
(Arena Sport 3 HD)
from

/config/adapter1-DVB-C-channels.conf

Then:

Code:
HTTP 404

Finally:

Code:
No tuner was available for the requested channel.

Important observation
Originally there was no

Code:
adapter0-DVB-C-channels.conf

Code:
adapter1-DVB-C-channels.conf

inside

Code:
/config

.
The DeviceHost still expects them.

Experiments
I manually created

Code:
adapter0-DVB-C-channels.conf
adapter1-DVB-C-channels.conf

using:

DVBv5 format
frequency sections
standard NextPVR tuning format

Examples:

Code:
[514000000OFF]
DELIVERY_SYSTEM = DVBC/ANNEX_A
FREQUENCY = 514000000
SYMBOL_RATE = 6900000
INNER_FEC = NONE
MODULATION = QAM/256
INVERSION = AUTO

Parser accepts the syntax (no parsing errors),
but DeviceHost still reports:

Code:
Failed to get tuning params

which suggests it expects a different internal format.

Additional information
Missnet (Bosnia)
DVB-C

Code:
6900 KS/s
QAM256

Frequencies:
394 MHz
402 MHz
410 MHz
418 MHz
426 MHz
434 MHz
442 MHz
450 MHz
458 MHz
466 MHz
474 MHz
482 MHz
490 MHz
498 MHz
506 MHz
514 MHz
522 MHz
530 MHz
538 MHz
546 MHz
554 MHz
562 MHz
570 MHz
578 MHz
586 MHz
594 MHz
602 MHz
610 MHz
618 MHz
626 MHz
634 MHz

Question
Should NextPVR automatically generate

Code:
adapter0-DVB-C-channels.conf
adapter1-DVB-C-channels.conf

after scanning?

Since scanning succeeds and

Code:
w_scan

works perfectly, the tuner and driver appear to be functioning correctly. The failure seems to occur only when DeviceHost attempts to resolve tuning parameters for live streaming.
Thank you for your help.

Can't install new NextPVR verion 7.1.0

Thu, 18 Jun 2026 03:38:19 +0000

I have tried installing the new Linux Version 7.1.0.260607 of NextPVR twice with no results. By "no results", I mean that the version of NextPVR shown when going to "Settings" remains the same as it has been 7.0.5.260307. The only difference is: "(7.1.1.260616 is available for download)" is now shown in a green font after my latest version number.

The Terminal Log of one of my installation sessions is shown below with my "# comments" added. I created a separate directory named "Downloads-2" to be sure I am only using the most recent downloaded files.

dick@deb:~$ cd Downloads-2 # Change to this directory for doing all the commands for installation.
dick@deb:~/Downloads-2$ ls # Nothing is shown because the directory is empty.
dick@deb:~/Downloads-2$ curl https://nextpvr.com/nextpvr-helper.deb -O # Download command is executed.

% Total % Received % Xferd Average Speed Time Time Time Current
Dload Upload Total Spent Left Speed
100 4626 100 4626 0 0 12877 0 --:--:-- --:--:-- --:--:-- 12921
dick@deb:~/Downloads-2$ ls # Directory listing shows the file has been downloaded.
nextpvr-helper.deb

dick@deb:~/Downloads-2$ ls -l # Long Listing show file size and download date and time.
total 8
-rw-r--r-- 1 dick dick 4626 Jun 17 18:21 nextpvr-helper.deb

dick@deb:~/Downloads-2$ sudo apt install ./nextpvr-helper.deb --install-recommends # Installation command
[sudo] password for dick:
Reading package lists... Done
Building dependency tree... Done
Reading state information... Done
Note, selecting 'nextpvr-helper' instead of './nextpvr-helper.deb' # THIS MAY BE THE PROBLEM
nextpvr-helper is already the newest version (3.1). # WHAT IS VERSION 3.1?
0 upgraded, 0 newly installed, 0 to remove and 300 not upgraded. # SHOWS 0 INSTALLED - WHY?

I have noticed that URL https://forums.nextpvr.com/showthread.ph...ight=7.1.0
refers to a URL for installation information Linux: https://forums.nextpvr.com/showthread.php?tid=59390
that is dated: 2019-06-14, 05:06 PM. Could this be the problem?

If needed, Link to my Log files: https://drive.google.com/file/d/1uPvJsoT...sp=sharing

Tnx, RAK

"Other Web Client" on two Pi's

Thu, 11 Jun 2026 15:25:46 +0000

I run NextPVR on two Pi's, one Pi4 and one Pi5. The Pi4 runs NextPVR via a Docker container, while the Pi5 runs it via installation with the Helper. This week I upgraded both Pi's to the latest version of NextPVR, v7.1.0.260607. This question concerns the behavior of the "other" web client across the two machines.

On the UI on the Pi4 (Docker), I see the main menu item "UIClient" just to the right of "Scheduler." Clicking on this brings up an alternative vertical menu structure (that I had never used before) which seems powerful. It appears to work fine; I like it.

On the UI on the Pi5 (Helper), "UIClient" does not appear on the main menu. If I go to the Settings page, and press the button "Where is the other web client?" the web page goes black, and a tiny square of pixels is shown in the upper left corner (using Chrome on Windows 11). The running NextPVR server process then exits with the following in systemctl:

Code:
Jun 11 11:06:48 CherryPi server.sh[12437]: Fontconfig warning: "/usr/share/fontconfig/conf.avail/05-reset-dirs-sample.conf", line 6: unknown element "reset-dirs"
Jun 11 11:06:48 CherryPi server.sh[12437]: /opt/dotnet/dotnet: symbol lookup error: /opt/nextpvr/system/runtimes/linux-arm64/native/libSkiaSharp.so: undefined symbol: FT_Get_BDF_Property
Jun 11 11:06:48 CherryPi systemd[1]: nextpvr-server.service: Main process exited, code=exited, status=127/n/a
Jun 11 11:06:48 CherryPi systemd[1]: nextpvr-server.service: Failed with result 'exit-code'.
Jun 11 11:06:48 CherryPi systemd[1]: nextpvr-server.service: Consumed 9.062s CPU time.

SAT>IP server channels not found

Mon, 08 Jun 2026 01:30:00 +0000

Hi folks,

Just upgraded to version 7.1.0.260607 which fails to find any sat>ip channels from my Triax TSS400. The log file shows a problem with paths.
I have included the log file which also contains an updated '1600 KoreaSat6 FTA (160.0E).ini' which reflects the updates made to freeview NZ satellite in the last week or so!
Please let me know if I can provide any further information

Kind regards, Stephen

logs-20260608-1304.zip (Size: 272.14 KB / Downloads: 6)

Can't Scan for Channels Fedora 44

Wed, 03 Jun 2026 03:14:32 +0000

When I try to scan for channels I get " Unexpected error in ScanOptions: System.IO.DirectoryNotFoundException: Could not find a part of the path '/atsc'."

The other packages are installed, including dvt-scan-tables.

logs-20260602-2305.zip (Size: 27.17 KB / Downloads: 2)

Increase scan channels timeout?

Mon, 01 Jun 2026 01:49:23 +0000

I have an issue running NextPVR on Ubuntu where one of the frequencies is failing to scan.

I've tested it using dvbv5-scan and a 30 sec timeout and it does then scan the channels OK.

The issue isn't signal strength as the other frequencies are a similar or even lesser strength, it just seems that the service on the problem frequency is slower to enumerate(?).

TIA
webby