Opened 19 years ago
Closed 19 years ago
Last modified 19 years ago
#2085 closed defect (fixed)
Changing channels unreliable on cable (QAM)
| Reported by: | Owned by: | danielk | |
|---|---|---|---|
| Priority: | minor | Milestone: | 0.21 |
| Component: | mythtv | Version: | head |
| Severity: | medium | Keywords: | |
| Cc: | Ticket locked: | no |
Description
When changing channels on a system set up for QAM cable on a PCHDTV 5500, I would often either get failure or the wrong channel (right frequency, wrong program ID). I traced this to the cached PMT/PAT from the old channel being used to select the PID for the new channel. Attached is a suggested fix, though I am not sure this is the best way to fix it.
Attachments (4)
Change History (12)
comment:1 by , 19 years ago
| Milestone: | → 0.21 |
|---|---|
| Owner: | changed from to |
| Version: | → head |
comment:2 by , 19 years ago
| Resolution: | → invalid |
|---|---|
| Status: | new → closed |
comment:3 by , 19 years ago
| Resolution: | invalid |
|---|---|
| Status: | closed → reopened |
I have attached requested logs. Both logs show changing the channel from channel number 240 (WHYY-DT, channel 119, serviceid 1) to channel number 246 (WPVI-DT3, channel 118, serviceid 4).
In the log with reset, it changed channels properly.
In the log without reset, it changed instead to channel 118, serviceid 1 (WPVI-DT).
comment:4 by , 19 years ago
mrussotto, can you try the attached patch and tell me if it fixes the problem for you?
comment:5 by , 19 years ago
| Resolution: | → fixed |
|---|---|
| Status: | reopened → closed |
I'm going to need "mythbackend -v record,channel,siparser" logs from changing from one channel to another with this problem. The reset in your patch should not be needed, and it would break quick channel changing for everyone else...