Am 04.07.2016 um 23:18 schrieb James Bottomley: > On Mon, 2016-07-04 at 23:08 +0200, Heiner Kallweit wrote: >> Am 04.07.2016 um 22:36 schrieb James Bottomley: >>> This looks to be a problem with the rc subsystem. The IR >>> controller in question is part of a cx8800 atsc card. In the 4.4 >>> kernel, where it works, this is what ir-keytable says: >>> >>> Found /sys/class/rc/rc0/ (/dev/input/event12) with: >>> Driver cx88xx, table rc-hauppauge >>> Supported protocols: other lirc rc-5 jvc sony nec sanyo mce-kbd >>> rc-6 sharp xmp >>> Enabled protocols: lirc nec >>> Name: cx88 IR (pcHDTV HD3000 HDTV) >>> bus: 1, vendor/product: 7063:3000, version: 0x0001 >>> Repeat delay = 500 ms, repeat period = 125 ms >>> >>> And in 4.6, where it doesn't work: >>> >>> Found /sys/class/rc/rc0/ (/dev/input/event12) with: >>> Driver cx88xx, table rc-hauppauge >>> Supported protocols: lirc After having had a look at the cx88 driver the issue seems to be there. For the HD3000 allowed_protocols is initialized to RC_BIT_OTHER only. This prevents autoloading of the NEC module.
If the device is not restricted to a particular protocol (some devices supported by cx88 seem to be restricted to the NEC protocol) then allowed_protocols should be set to RC_BIT_ALL. Can you test with this change? If HD3000 is restricted to NEC then the initialization should be similar to e.g. PROLINK PLAYTVPVR >>> Enabled protocols: lirc >>> Name: cx88 IR (pcHDTV HD3000 HDTV) >>> bus: 1, vendor/product: 7063:3000, version: 0x0001 >>> Repeat delay = 500 ms, repeat period = 125 ms >>> >>> The particular remote in question seems to require the nec protocol >>> to work and the failure in 4.5 and 4.6 is having any supported >>> protocols at all. I can get the remote to start working again by >>> adding the nec protocol: >>> >>> echo nec > /sys/class/rc/rc0/protocols >>> >>> But it would be nice to have this happen by default rather than >>> having to add yet another work around init script. >>> >> Meanwhile decoder modules are loaded on demand only. This can be done >> automatically w/o the need for additional init scripts. >> >> If /etc/rc_maps.cfg includes a keymap with type NEC then the nec >> decoder module is loaded automatically. >> >> My rc_maps.cfg looks like this (and causes the SONY decoder module to >> be loaded automatically): >> >> #driver table file >> * * sony-rm-sx800 >> >> And the keymap: >> >> # table sony-rm-sx800, type SONY >> 0x110030 KEY_PREVIOUS >> 0x110031 KEY_NEXT >> 0x110033 KEY_BACK >> .. >> .. > > > Well, to work in the 4.4 kernel, the rc_maps.cfg names a table with the > nec controller, so it seems that whatever is supposed to trigger > autoloading isn't. > > Is ir-keytable supposed to do this? The current debian testing one is > > Package: ir-keytable > Source: v4l-utils > Version: 1.10.1-1 > > Which seems to be the most current one. > > James > >
