[mythtv-users] Arris / Motorola DCX3200-M and 6200ch

David Newman dnewman at networktest.com
Tue Jul 5 16:18:54 UTC 2022


On 7/4/22 1:03 PM, glen wrote:
> On Mon, 2022-07-04 at 12:25 -0700, David Newman wrote:
>>
>>
>> On 7/4/22 10:17 AM, glen wrote:
>>> On Mon, 2022-07-04 at 10:01 -0700, David Newman wrote:
>>>> On 7/4/22 6:13 AM, glen wrote:
>>>>> i am on spectrum with same box in los angeles area and mine is working.
>>>>> when unplugging the firewire cable and replugging it does dmesg out 
>>>>> show
>>>>> a device being created ?
>>>>> if so then possibly the vendor id has changed and needs to be added.
>>>>>
>>>>> if not then it may be blocked.
>>>>
>>>> Thanks Glen and Gary for your responses. I am also a Spectrum customer
>>>> in the LA area.
>>>>
>>>> Unplugging/replugging the Firewire cable on the Arris box did produce
>>>> dmesg output:
>>>>
>>>> [34408.459191] usb 1-2: USB disconnect, device number 3
>>>> [34408.459352] hdpvr 1-2:1.0: device video0 disconnected
>>>> [34411.893933] usb 3-2: new full-speed USB device number 3 using 
>>>> ohci-pci
>>>> [34412.053919] usb 3-2: device descriptor read/64, error -62
>>>> [34414.401934] usb 1-2: new high-speed USB device number 5 using 
>>>> ehci-pci
>>>> [34414.586043] usb 1-2: New USB device found, idVendor=2040,
>>>> idProduct=4902, bcdDevice= 0.00
>>>> [34414.586060] usb 1-2: New USB device strings: Mfr=1, Product=2,
>>>> SerialNumber=3
>>>> [34414.586068] usb 1-2: Product: Hauppauge HD PVR
>>>> [34414.586074] usb 1-2: Manufacturer: AMBA
>>>> [34414.586078] usb 1-2: SerialNumber: 00A45E41
>>>> [34414.785630] hdpvr 1-2:1.0: firmware version 0x15 dated Jun 17 2010
>>>> 09:26:53
>>>> [34414.971089] ir-kbd-i2c 0-0071: IR for HDPVR is known to cause
>>>> problems during recording, use enable_hdpvr modparam to enable
>>>> [34415.003778] hdpvr 1-2:1.0: device now attached to video0
>>>> [35559.342242] perf: interrupt took too long (2503 > 2500), lowering
>>>> kernel.perf_event_max_sample_rate to 79750
>>>> [41951.339994] firewire_core 0000:03:05.0: giving up on node ffc0:
>>>> reading config rom failed: bus reset
>>>> [41951.340301] firewire_core 0000:03:05.0: created device fw0: GUID
>>>> 00080008000802e5, S400
>>>>
>>>> and now plugreport sees something:
>>>>
>>>> Host Adapter 0
>>>> ==============
>>>>
>>>> Node 0 GUID 0x00080008000802e5
>>>> ------------------------------
>>>> libiec61883 error: error reading oMPR
>>>> libiec61883 error: error reading iMPR
>>>>
>>>> and there is now something at /dev/fw0:
>>>>
>>>> crw------- 1 root root 240, 0 Jul  4 09:46 /dev/fw0
>>>>
>>>> but 6200ch still fails the same way:
>>>>
>>>> $ 6200ch -v -v -g 00080008000802e5 2
>>>> couldn't set port: Invalid argument
>>>>
>>>> I don't know about that 'S400' at the end of the dmesg display, or how
>>>> to alter the vendor id.
>>>>
>>>> Thanks in advance for any further troubleshooting clues.
>>>>
>>>> dn
>>>>
>>>>
>>>>>
>>>>>
>>>>> On Sun, 2022-07-03 at 21:43 -0700, David Newman wrote:
>>>>>> Mythbuntu 32 on Ubuntu 22 runs fine, but an old Motorola 3200 set-top
>>>>>> box (STB) died and Spectrum replaced it with an Arris DCX3200-M, 
>>>>>> and now
>>>>>> the system doesn't see it via Firewire:
>>>>>>
>>>>>> $ 6200ch -v -v 2
>>>>>> couldn't set port: Invalid argument
>>>>>>
>>>>>> plugreport's output is empty
>>>>>>
>>>>>> The setup is a Firewire card in the Myth box, with a cable to the 
>>>>>> STB's
>>>>>> Firewire port. There's also a Hauppauge PVR500 box connected.
>>>>>>
>>>>>> Downloading the 6200ch source and recompiling didn't help, even though
>>>>>> the source suggests this STB is supported:
>>>>>>
>>>>>> #define DCX3200M_VENDOR_ID1 0x000024a1
>>>>>> #define DCX3200M_MODEL_ID1  0x0000fa01
>>>>>> #define DCX3200M_VENDOR_ID2 0x00cc7d37
>>>>>> #define DCX3200M_MODEL_ID2  0x0000fa05
>>>>>>
>>>>>> This older thread suggests the cable provider (Spectrum in this case)
>>>>>> can disable any port, including Firewire.
>>>>>>
>>>>>> Thanks in advance for clues on enabling the port and/or getting the
>>>>>> system to see the new STB.
>>>>>>
>>>>>> dn
>>>>>>
>>>>>>
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>>>> <http://email.mg.glenb.net/c/eJxFjTsOwjAQRE8Td1g48bdwQUMFZ4jW9jqxSAIkGxC3xxIF0lSjN2-SjxmSkqx45yRCxGA0qGyjjADOCCGMkh04VAqCUtlZHmHGqZHHYcIl8AWJjV4kHaKW2poWXKs6m3K0BqvEZBQxs8mPRI-mOzXtueZdboXPHxrpxe_rUJsrlKksQ38pG_VI5bkjEbLV_6jDvuG61df_6AtBOD1R>>
>>>> MythTV Forums: https://forum.mythtv.org 
>>>> <http://email.mg.glenb.net/c/eJxFjDsOwyAQBU9juiDALF4KijS5x_JZO5I_EeBIuX0spYjeNKORXg6JKYMVzwARkx89aLI5YWE2qF0BmK6RcZwYR-eil4m2sg5WzWvZo9xLF0sAbdhqmpRLSDmSV6DBYlE5MyODWMPS-6sN430wjws-6rnJ7dOX_pZHnUUNP7mdrdR23f_bF-l-NBM> 
>>>>
>>>> <http://email.mg.glenb.net/c/eJxFjMsKwyAQAL8m3ioxulUPHnLpf6zrblLIoxhT6N830ENhLsPAlESCBZx6phgdI3H2dwQJ5AgxemOMB2cxMgBmAIlBE668dK6fFt6y3ripOUnOwUouCJYMD2SDNxiDL1aGvhhRS5pbex2dHbvhcSF7PVe9ftrc3nqvk6rpJ7fz4Hpc-3_7AkPJNMM 
>>>> <http://email.mg.glenb.net/c/eJxFjMsKwyAQAL8m3ioxulUPHnLpf6zrblLIoxhT6N830ENhLsPAlESCBZx6phgdI3H2dwQJ5AgxemOMB2cxMgBmAIlBE668dK6fFt6y3ripOUnOwUouCJYMD2SDNxiDL1aGvhhRS5pbex2dHbvhcSF7PVe9ftrc3nqvk6rpJ7fz4Hpc-3_7AkPJNMM>>
>>> your dmesg output looks different than mine. i always get two devices
>>> and one not working. here is my plugreport:
>>>
>>> [g at Myth <mailto:g at Myth> modprobe.d]$ plugreport
>>> Host Adapter 0
>>> ==============
>>>
>>> Node 0 GUID 0xd97f000000007fd9
>>> ------------------------------
>>> libiec61883 error: error reading oMPR
>>> libiec61883 error: error reading iMPR
>>>
>>> Node 1 GUID 0x6455b1fffe293e3b
>>> ------------------------------
>>> oMPR n_plugs=1, data_rate=2, bcast_channel=0
>>> oPCR[0] online=1, bcast_connection=0, n_p2p_connections=1
>>> channel=63, data_rate=1, overhead_id=0, payload=376
>>> iMPR n_plugs=0, data_rate=2
>>>
>>> you are not getting a guid for an active connection. fwiw, i have always
>>> need this on my module:
>>>
>>> options firewire_ohci quirks=0x2
>>>
>>> i don't think the issue is the vendor id, i thinkk the issue is you are
>>> not getting a device. all of the firewire info is old, but you should
>>> double check on what the modules are and any possible conflicts in later
>>> kernels.
>>
>> Here are the installed Firewire modules:
>>
>> # lsmod | grep -i wire
>> firewire_ohci          49152  0
>> firewire_core          77824  1 firewire_ohci
>> crc_itu_t              16384  1 firewire_core
>>
>> This is with a 5.15.0-40-generic kernel and an Ubuntu 22 LTS distro.
>>
>> As for recompiling with different firewire_ohci options: Pardon my
>> ignorance, but are you talking about recompiling the kernel? Or a
>> firewire module? Or something else?
>>
>>  > also have you tried rebooting the cable box, while the computer is
>>  > connected via firewire ? that's worth a try.
>>
>> Yes. Another quirk of this new STB is that it powers off by itself after
>> some interval of inactivity, which is its own problem for use with
>> MythTV. When I powered it back on plugreport only sees Node 0:
>>
>> # plugreport
>> Host Adapter 0
>> ==============
>>
>> Node 0 GUID 0x00080008000802e5
>> ------------------------------
>> libiec61883 error: error reading oMPR
>> libiec61883 error: error reading iMPR
>>
>> dn
>>
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>> MythTV Forums: https://forum.mythtv.org 
>> <http://email.mg.glenb.net/c/eJxFjDsOwyAQBU9juiDALF4KijS5x_JZO5I_EeBIuX0spYjeNKORXg6JKYMVzwARkx89aLI5YWE2qF0BmK6RcZwYR-eil4m2sg5WzWvZo9xLF0sAbdhqmpRLSDmSV6DBYlE5MyODWMPS-6sN430wjws-6rnJ7dOX_pZHnUUNP7mdrdR23f_bF-l-NBM>
> no, i was talking about loading the module with that option with a file 
> in /etc/modprobe.d it has been a long time since i used ubuntu but i 
> think that is where you can place conf files to enable module options at 
> boot.

blacklist-firewire.conf included several lines about Firewire. I've 
commented these out. The file contents now look like this:

# Select the legacy firewire stack over the new CONFIG_FIREWIRE one.

#blacklist ohci1394
blacklist sbp2
#blacklist dv1394
#blacklist raw1394
blacklist video1394

#blacklist firewire-ohci
#blacklist firewire-sbp2

Also created a 'firewire-ohci.conf' file in this directory with these 
contents, then unloaded and reloaded the fireware_ohci module:

options firewire_ohci quirks=0x2


> 
> as for box, in the settings for the box itself under power you can turn 
> off the sleep mode and have it stay up.

OK, thanks. Separate issue.

> 
> what i was talking about. was pulling power from box and plugging back 
> in to force a reboot while computer is on and attached to firewire and 
> then check plugreport to see if you have an active connection.

After power off/on and the above changes in /etc/modprobe.d, plugreport 
sees the following:

# plugreport
Host Adapter 0
==============

Node 0 GUID 0x00080008000802e5
------------------------------
libiec61883 error: error reading oMPR
libiec61883 error: error reading iMPR

Node 1 GUID 0xf40e83fffe63a321
------------------------------
oMPR n_plugs=1, data_rate=2, bcast_channel=63
oPCR[0] online=1, bcast_connection=0, n_p2p_connections=0
	channel=0, data_rate=2, overhead_id=0, payload=376
iMPR n_plugs=0, data_rate=2

starting with node: 1
node 1: vendor_id = 0x00f40e83 model_id = 0x00002322
Could not find Motorola DCT-6200 on the 1394 bus.

Modifying 6200ch.c with this vendor_id and model_id and recompiling did 
not change this output.

#define DCT6200_VENDOR_ID17 0x00f40e83
#define DCT6200_MODEL_ID4  0x00002322

I've also tried the same thing with 'DCX3200' instead of 'DCT3200' but 
got the same behavior.

Also, user Greg was kind enough to send a different 6200ch binary but it 
too produced the same output.

I appreciate your help with this, and any additional troubleshooting 
tips you might have.

dn





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