David Engel wrote: > As far as I can tell, this thread petered out without a resolution. > CityK later posted on avsforum, however, that analog on his card was > after more changes by Hans. I'm confused. Is analog on the KWorld > 115 supposed to be working again or not? I saw that some changes by > Hans made it into the main Hg repository, but as of yesterday, analog > still didn't work for me. > Nope, this thread is still alive and well -- I posted to it last Thurs (?), and Mauro replied, but I haven't had time to follow up with this since then. Anyway, here's a synopsis of the situation: - Hans had a first go at the saa7134 (and related modules) in this work was in his v4l-dvb-saa7134 test repo .... these initial changes, unfortunately, were NOT sufficient on their own to get analog TV working. These changes did, however, get pulled into the mainline of v4l-dvb - Hans' second attempt at this is found in his v4l-dvb-kworld test repo ... testing this code revealed that analog tv did indeed work again with tvtime ... I also noted that there seems to be a bit of redundancy now in terms of the tuner being initialized twice - Mauro created a patch intended to be applied against mainline ... I tested and analog tv did NOT work - On Sunday Jan 25th I sent a lengthy message to the list, outlining some debug results etc. and also informing Mauro that his patch did NOT work ... I know that, at the very least, Trent and Hermann received that message, because they quoted from it in further discussion about the i2c gate (the inherent underlying problem at the heart of the issue). - A few days later, scanning through the #irc logs, I caught a discussion, regarding Mauro's patch getting pulled into mainline, and the discussion seemed to indicate that there was some confusion as to what I had said worked and what doesn't. This surprised me for I had been pretty explicit in my Jan 25th mail list message. The other alternative was perhaps they simply had missed that message...so, in order to clear the situation up, I went to the mailing list archive to find a link for my message...only to discover it was NEVER achieved/recorded....grrrrr. So I'm at a complete loss as to who actually saw the Jan 25th message and who didn't. - Further, somewhat concurrently, I discovered that (with Hans' kworld test repo) analog TV was ONLY working with tvtime ... xawtv/motv and kdetv were borked (I don't use Myth, so I have no idea what its status would be ... though, I'd suspect that it works like tvtime). I quickly traced this problem to be related to dga and Xv. A very similar situation with these apps existed several years ago when the proprietary X drivers from nvidia and ati removed dga functionality from their respective drivers (for some background read: http://www.nvnews.net/vbulletin/showthread.php?t=68232, and also the relevant portion of the FAQ from the nvidia readme: ftp://download.nvidia.com/XFree86/Linux-x86_64/180.27/README/chapter-07.html), however, the basic nv driver would still function. Nvidia would later provide a workaround to this issue in their driver. So, in this modern day occurrence of this similar error/bug, the obvious first test is to eliminate the proprietary driver from the equation. However, the test result with the nv driver was the same -- borked motv/xawtv and kdetv. I reported this, saying that I suspected that a something may have been introduced somewhere resulting in this issue with these apps resurfacing. This is why I asked that Hans' kworld repo NOT be pulled into mainline (if there had been any thought to that -- though I don't think there was, because I now realize that I don't think many had even seen my prior Jan 25th message !) until further testing was performed. - Mauro replied believing that this was unrelated to anything v4l-dvb, but rather an artefact of the X drivers. I suspected that that was NOT the case (the nv driver failing in my previous test was my cue). The next obvious test was to revert back to an older v4l-dvb snapshot that was patched with Mike Krufky's hack/workaround. [reverting back should have been an easy task, but unfortunately I managed to turn it into a frustrating ordeal --- in the case of Hans' kworld source, the rminstall process did not blow away all the modules; further, while I had been testing channel scans with xawtv/motv/kdetv, I also tried with YAST, and unbeknownst to me, it must have saved an attempt at configing the ir remote --- so that, later, when no v4l-dvb modules were any longer present on the system, a config script somewhere must have been calling for the related remote control i2c-blah-blah-blah modules and the system would freeze, all too coincidently just when the nvidia x driver was starting up X ... and booting to failsafe and console mode was not working either (or at least not very well) ... so my initial belief that the very recent nvidia driver I installed had mucked up X, and that incorrect belief/assumption led to a masking of the real underlying problem for a while ... plus the fact that I really went off on a tangent messing around with xorg.conf and trying out some of the recent xinput modules etc etc ) .. anyway, as they say, all roads lead to Rome, and I eventually sorted everything out] The older snapshot and Mike's patch worked as I expected it to. Removing that and installing Hans' kworld repo again --> xawtv/motv/kdetv = fail with Overlay. I can positively state, WITHOUT DOUBT, that there is something in Hans code that is sourcing this issue. I have not looked at it closely, nor do I know if I would recognise it when I do, though I suspect that it would be from initial batch of changes (inserted into the v4l-dvb-saa7134 repo). -------------------------------------------------------------------- So the grand conclusion (aka state of the nation): -------------------------------------------------------------------- - how to provide a proper solution that will resolve the underlying i2c gate issue remains a point in discussion. In the meantime: - Hans kworld repo: Pros: does provide analog tv functionality for, at a minimum, tvtime. Cons: The changes introduced result in, as testing to date has shown, a harmless bit of duplication in the way of the tuner being loaded twice. kdetv/motv/xawtv, at a minimum, do not work in overlay mode. - Mainline v4l-dvb: Pros: none ... you will achieve this thread's namesake -- all static. Cons: since the code from Hans' v4l-dvb-saa7134 repo was merged, Mike's hack/workaround patch has been rendered ineffective for good. Mauro's later patch was also pulled into mainline, but it does not change the situation analog tv (and I do not mean in relation to Mike's patch, I mean precisely upon its own). - Mike's hack/workaround patch Pros: it will apply and work with snapshots of v4l-dvb up to probably ~ Jan 15th or so. All the apps that I tested with work as expected. Cons: in order to use analog tv, upon each boot, one must do what I termed being a dance with unloading and reloading the tuner module via modprobe. - And finally, as an end note, DVB does, and always has, continue to work. As I eluded to earlier (somewhere within this growing thread), the assignment of RF input spigots has changed several times for these cards throughout the course of their Linux driver(s)'s lifetime. Currently, by default: DVB - digital cable is now accessed through the lower input. OTA/ATSC off the top input. ... this configuration is opposite to that which users of 2.6.24 era kernels are familiar with. Analog TV - regardless of whether ota or through cable is also off the top input. -- To unsubscribe from this list: send the line "unsubscribe linux-media" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
