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GoodKernelAndDriver » History » Version 3

Paul M, 2018-09-08 14:25

1 1 Paul M
h1. Known Good Kernel And Driver Combinations
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TV Headend is entirely dependent on a reliable combination of a kernel, drivers and hardware. In order to help people set up their server, this page will provide a list of combinations that people have found to work.
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h2. TBS 6982 DVB-S/S2, Kernel 4.8.0, on Ubuntu 16.04-LTS
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This combination of kernel and drivers was found to be stable:
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* Ubuntu: 16.04.5-LTS
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* kernel: 4.8.0-58-lowlatency
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* drivers: tbs-linux-drivers_v170330.zip
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* TV Headend: 4.3-1292~g9b9ee68~xenial
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The key factor in making the TBS card work was to ensure MSI Interrupts were enabled when the kernel module loads.
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Firstly, use "dpkg \-l | grep linux\-" to list the linux kernel and associated packages.
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Use "dpkg -r" to remove kernel packages, and use "dpkg -P" to then purge everything. Check /boot remove any left over vmlinux and init.rd files etc; then likewise clean out /lib/modules. DO NOT REBOOT at any time when you have no kernel installed!
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Then install the kernel and associated packages, to get to the following state
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<pre>
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ii  linux-headers-4.8.0-58                 4.8.0-58.63~16.04.1                        all          Header files related to Linux kernel version 4.8.0
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ii  linux-headers-4.8.0-58-lowlatency      4.8.0-58.63~16.04.1                        amd64        Linux kernel headers for version 4.8.0 on 64 bit x86 SMP
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ii  linux-hwe-tools-4.8.0-58               4.8.0-58.63~16.04.1                        amd64        Linux kernel version specific tools for version 4.8.0-58
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ii  linux-image-4.8.0-58-lowlatency        4.8.0-58.63~16.04.1                        amd64        Linux kernel image for version 4.8.0 on 64 bit x86 SMP
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ii  linux-signed-image-4.8.0-58-lowlatency 4.8.0-58.63~16.04.1                        amd64        Signed kernel image lowlatency
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ii  linux-tools-4.8.0-58-lowlatency        4.8.0-58.63~16.04.1                        amd64        Linux kernel version specific tools for version 4.8.0-58
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</pre>
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Then install the driver supplied by TBS. Create a script containing this:
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<pre>
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#!/bin/bash
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#VER="180822"
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#ZIPFILE="tbs-open-linux-drivers_v$VER.zip"
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#TARFILE=media_build-2018-0822.tar.bz2
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VER="170330"
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ZIPFILE="tbs-linux-drivers_v170330.zip"
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TARFILE=linux-tbs-drivers.tar.bz2
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DIR=/home/build
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mkdir -p "$DIR"
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cd "$DIR"
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if [ ! -f "$ZIPFILE" ] ; then
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       wget "https://www.tbsiptv.com/download/common/$ZIPFILE"
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fi
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mkdir -p "$DIR/tbs_$VER"
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cd "$DIR/tbs_$VER"
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pwd
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ls -la "../$ZIPFILE"
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unzip "../$ZIPFILE"
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tar jxvf "$TARFILE"
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cd linux-tbs-drivers  
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./v4l/tbs-x86_64.sh  
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make -j4  
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make install
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</pre>
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And execute it. 
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Finally, set the driver to use MSI Interrupts by creating a file called "/etc/modprobe.d/tbs.conf" containing these lines:
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<pre>
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options tbs_pcie-dvb tbs_int_type=1
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options saa716x_tbs-dvb int_type=1
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</pre>
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It should now be possible to reboot your computer. Afterwards, check the kernel module is loaded thus:
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<pre>$ lsmod | egrep "saa|dvb"
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saa716x_tbs_dvb        77824  0
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</pre>
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And check that the interrupts are MSI by checking the /proc/interrupts, like this:
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<pre>
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$ egrep -i "saa|dvb" /proc/interrupts  
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31:      29757          0          0          0   PCI-MSI 1572864-edge      SAA716x Core
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</pre>
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Also see this:
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https://tvheadend.org/boards/5/topics/32496?r=34042#message-34042