Bug 64761
| Summary: | Nova-TD does not tune correctly on first attempt | ||
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| Product: | v4l-dvb | Reporter: | kernel |
| Component: | dvb-frontend | Assignee: | dvb-frontend (v4l-dvb_dvb-frontend) |
| Status: | NEW --- | ||
| Severity: | normal | CC: | alan, smg23, Tuomo.Mickelsson |
| Priority: | P1 | ||
| Hardware: | All | ||
| OS: | Linux | ||
| Kernel Version: | 3.8.0-29 | Subsystem: | |
| Regression: | No | Bisected commit-id: | |
| Attachments: |
Text output from "scan uk-SandyHeath"
Mythtv Scanning - first signs that something wasn't right! Tuning outputs by kernel |
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Description
kernel
2013-11-10 22:34:45 UTC
Created attachment 114171 [details]
Mythtv Scanning - first signs that something wasn't right!
When mythtv was scanning for channels, it claimed to have found identical muxes on adjacent channels. eg C48 is a valid mux but C49 isn't. However, it just seems to be reporting what it found on C48 again.
C51 and C52 are both valid muxes, but they should have different numbers of channels, and C53 is not a valid mux (but it appears to show the number of channels that would be expected on C52).
Created attachment 143481 [details] Tuning outputs by kernel I think I have encountered this same issue with Hauppauge Nova-TD stick. It fails to tune channels correctly in Linux kernel 3.8.13 and later, but works fine in kernel 3.2.61 (haven't tested with all versions between). Tuning fails in Mythtv and Kaffeine equally. For reference I attach dmesg file of my current Ubuntu running kernel 3.13 and verbose w_scan outputs from 3 kernel versions mentioned above. Two outputs from current kernel show consistent failure within that kernel, while the output from 3.8.13 is slightly different but equally failed compared to output from 3.2.61 kernel where the channels are all correct. The failed tuning result lists some channels to frequencies of other channels, thus making the Hauppauge Nova-TD Stick/Elgato Eye-TV Diversity adapter quite useless under recent Linux kernels. I see here some similarity to Bug 57731. I experience same problem with the Hauppauge Nova-TD. From my limited testing it appears to affect most/all kernels above 3.2.x.x. The problem is the same in Kaffeine and MeTV. In contrast, the 'Sony PS3 Play TV' device works fine with the latest kernels (notably using the same dib0700 driver as the Nova-TD). As I use my Nova TD daily I'm presently stuck on an old 3.2 kernel distro, can't update unless I find a fix or I buy a new tuner. Spoke to Hauppauge, they confirmed my device is otherwise working ok, advised kernel patch required. |