@Area13 I got the two plates off my 3635 to have a look. The chips are D2850A and D2861er. It's practically identical to the 3636. But just changing the 3636 definitions to 3635 in the source code give me the results I detailed above.
This is my stack trace...
Dec 9 23:39:30 tv kernel: [ 61.980938] Call Trace:
Dec 9 23:39:30 tv kernel: [ 61.980944] [<ffffffff81613905>] ? i2c_unlock_adapter+0x25/0x40
Dec 9 23:39:30 tv kernel: [ 61.980947] [<ffffffff81613fe4>] ? i2c_transfer+0x64/0xd0
Dec 9 23:39:30 tv kernel: [ 61.980951] [<ffffffffc06011b1>] ? cxd2817_wr_regs+0x151/0x1e0 [cxd2817]
Dec 9 23:39:30 tv kernel: [ 61.980956] [<ffffffffc06084c8>] cxd2861_init+0x68/0x2e0 [cxd2861]
Dec 9 23:39:30 tv kernel: [ 61.980962] [<ffffffffc03fc669>] dvb_frontend_init+0x59/0xb0 [dvb_core]
Dec 9 23:39:30 tv kernel: [ 61.980968] [<ffffffffc03fdca7>] dvb_frontend_thread+0x77/0x720 [dvb_core]
Dec 9 23:39:30 tv kernel: [ 61.980972] [<ffffffff817b256b>] ? __schedule+0x37b/0x820
Dec 9 23:39:30 tv kernel: [ 61.980978] [<ffffffffc03fdc30>] ? dvb_frontend_should_wakeup.isra.2+0x80/0x80 [dvb_core]
Dec 9 23:39:30 tv kernel: [ 61.980983] [<ffffffff81093822>] kthread+0xd2/0xf0
Dec 9 23:39:30 tv kernel: [ 61.980986] [<ffffffff81093750>] ? kthread_create_on_node+0x1c0/0x1c0
Dec 9 23:39:30 tv kernel: [ 61.980990] [<ffffffff817b6d18>] ret_from_fork+0x58/0x90
Dec 9 23:39:30 tv kernel: [ 61.980993] [<ffffffff81093750>] ? kthread_create_on_node+0x1c0/0x1c0
Dec 9 23:39:30 tv kernel: [ 61.980996] Code: 44 0f b6 e1 40 0f b6 c6 44 01 e0 83 f8 7f 0f 8f fe 00 00 00 40 88 b5 49 ff ff ff 48 8b b5 28 ff ff ff 48 83 c7 01 e8 86 c0 da c0 <49> 8b 85 68 01 00 00 48 85 c0 74 0a be 01 00 00 00 4c 89 ef ff
Dec 9 23:39:30 tv kernel: [ 61.981040] RIP [<ffffffffc060816a>] cxd2861_wr_regs+0xaa/0x1a0 [cxd2861]
Dec 9 23:39:30 tv kernel: [ 61.981043] RSP <ffff8800ba49fcc8>
Dec 9 23:39:30 tv kernel: [ 61.981045] CR2: 0000000000000168
Dec 9 23:39:30 tv kernel: [ 61.985556] ---[ end trace 921a93032f0808d1 ]---
I'll try to figure this out but if anyone else is cleverer than I am please jump in!