Re: pctv452e
On 04/07/12 17:22, Antti Palosaari wrote: As the new DVB-USB fixes many bugs I ask you to test it. I converted pctv452e driver for you: http://git.linuxtv.org/anttip/media_tree.git/shortlog/refs/heads/pctv452e I've had chance to give this kernel a go. Unfortunately I'm getting an (unrelated) crash, which appears to be caused by IP forwarding. The crash basically makes it unusable so I'm not actually able to test the PCTV driver. :( I'll add the stack trace here for reference, although as mentioned, it doesn't appear to be related to the DVB drivers: [ 126.188809] [ cut here ] [ 126.193455] kernel BUG at mm/slab.c:505! [ 126.197388] Internal error: Oops - BUG: 0 [#1] ARM [ 126.202191] Modules linked in: ctr twofish_generic twofish_common camellia_generic serpent_generic blowfish_generic blowfish_common cao [ 126.261699] CPU: 0Not tainted (3.5.0-rc5+ #1) [ 126.266510] PC is at kfree+0xa0/0xfc [ 126.270096] LR is at __kfree_skb+0x14/0xbc [ 126.274204] pc : [c00c991c]lr : [c0275a20]psr: 4093 [ 126.274204] sp : deadbb20 ip : 00ff fp : deadbba4 [ 126.285729] r10: c045b0a4 r9 : r8 : 0001 [ 126.290971] r7 : r6 : a013 r5 : de2e7034 r4 : de2e7000 [ 126.297519] r3 : c08bdce0 r2 : r1 : r0 : de2e7000 [ 126.304069] Flags: nZcv IRQs off FIQs on Mode SVC_32 ISA ARM Segment user [ 126.311315] Control: 0005397f Table: 1eac8000 DAC: 0015 [ 126.317078] Process tput (pid: 1411, stack limit = 0xdeada270) [ 126.322930] Stack: (0xdeadbb20 to 0xdeadc000) [ 126.327304] bb20: de11a5e0 de2e7034 0003 c0275a20 de11a5e0 c02aa448 ded95000 00012c9f [ 126.335518] bb40: de11a5e0 de2e7034 de11a5e0 de2e7034 deadbba4 0008 [ 126.343732] bb60: c048e8c0 c02a885c ded95000 0001 0002 c045b084 df904000 deadbba4 [ 126.351946] bb80: 0008 c027d77c c04915f4 de11a5e0 [ 126.360161] bba0: deada000 c045b0a4 c08bdce0 de11a5e0 2fcded46 df9045dc df904000 8000 [ 126.368374] bbc0: df904460 bf01c054 0005 df904460 [ 126.376588] bbe0: 0010 df90454c 0080 df9059b0 df904600 [ 126.384802] bc00: def2be38 df90454c c0492360 0001 c04b5bc0 012c 0080 [ 126.393017] bc20: c0492368 c027db90 c04b5bcc b3c1 c04b5bcc deada000 0001 000c [ 126.401232] bc40: c04b5bc0 0003 0100 c0491bcc c0468944 c0025f68 c046a7f0 [ 126.409446] bc60: 000a deadbcdc 000b fed20200 deadbcdc c04915f4 [ 126.417660] bc80: c0491bcc 000200da c002618c 000b c000f850 c009c228 4013 [ 126.425874] bca0: fed20200 c000e574 c04915f4 0385 0004 0041 [ 126.434089] bcc0: a18a4473 0002 c04915f4 c0491bcc 000200da 0001bc8c deadbcf4 [ 126.442303] bce0: c009c28c c009c228 4013 deada000 c009c28c [ 126.450516] bd00: 0041 0001bc8c 0385 c009e830 0041 0002 0001 [ 126.458732] bd20: 0018 c0491bd0 deada000 c04915f4 0002 [ 126.466945] bd40: deadbd8c c04915f4 0122 000200da deada000 [ 126.475159] bd60: 0002 def2be38 c0491bcc 0001 c009eebc 0001 0041 [ 126.483374] bd80: c04915f4 0002 dedb41c0 de0e50f8 0100 df48d868 [ 126.491587] bda0: 0002 002a de42ae04 dee49b78 c0491bd0 0200 000200da [ 126.499801] bdc0: 0010 c00b5234 de87b69c 0028 002a [ 126.508016] bde0: c04915f4 c0527580 def2be38 def2be38 0001 bea81000 de9a3204 def2be38 [ 126.516230] be00: de42aca0 deacafa8 c00b6f94 002a 0028 [ 126.524445] be20: deada000 b6d7b000 deadbe78 bea81000 [ 126.532659] be40: deac8000 05f5 de42aca0 def2be38 0029 deacafa8 c00b76ec [ 126.540874] be60: deacafa8 0029 deadbfb0 bea81c34 def2be38 def2eb60 de42aca0 0029 [ 126.549088] be80: 0817 c0015548 deadbf08 b6efb000 deadbf08 c00b8390 de42acd4 [ 126.557302] bea0: deacadb8 de42aca0 b6efafff b6efb000 df59f1c8 df59f1a4 b6eed000 [ 126.565517] bec0: b6efb000 b6eed000 deadbf08 de0fa548 df9af70c b6eed000 c08cd1c0 [ 126.573730] bee0: c08cd1c0 0817 c045e414 bea81c34 deadbfb0 [ 126.581944] bf00: b6f2 c0008404 c00d5018 [ 126.590158] bf20: 017d de0fa548 de0fa548 [ 126.598373] bf40: b6efb000 b6eed000 c00ba184 de42aca0 de0fa548 c00bb3c4 [ 126.606588] bf60: b6efb000 b6eed000 d71f de42acd4 b6eed000 de42aca0 c000eae8 [ 126.614802] bf80: deada000 bea83aec c00bb450 b6f2 08b4 8bd4 [
re: pctv452e
Ps. Steve, could you please give me full version of kernel which works with pctv452e? I think it was 2.6.37-1-kirkwood from Debian which I was using (this is an ARM system). As the new DVB-USB fixes many bugs I ask you to test it. I converted pctv452e driver for you: http://git.linuxtv.org/anttip/media_tree.git/shortlog/refs/heads/pctv452e Only PCTV device supported currently, not TechnoTrend at that time. Can I ask why it only works on the PCTV devices? I was under the impression that the TechnoTrend hardware was identical? If you are able to provide any pointers as to where the TechnoTrend support is broken (or what debugging I should be turning on to figure out where it is broken) then that would be helpful. Thanks. -- - Steve -- To unsubscribe from this list: send the line unsubscribe linux-media in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
pctv452e
I've been using a Technotrend TT 3600 USB DVB-S2 receiver for a couple of years, which has (largely) been working fine under the S2-liplianin pctv452e driver. I've been aware of a lot of documented problems with running this receiver under the 3.x kernel, so I've stuck with the 2.6 series kernels. Unfortunately I've now had to upgrade to the 3.2.0 kernel for other unrelated reasons, and it seems that the device is more or less unusable under this kernel. With the stock 3.2.0 kernel, the driver produces numerous I2C errors and is quite unreliable. The I2C errors seem to be produced exclusively as a result of stb_6100_read_reg() reading register F, and notably all calls to stb6100_read_regs() seem to succeed, so I've replaced the stb_6100_read_reg() function with a call to stb6100_read_regs(), so it reads all the registers and then returns the requested one, rather than reading just the requested register. This seems to make the I2C errors disappear. However, the card is still very unreliable - after about 5 minutes of receiving a channel (using MythTV), it breaks. No errors logged in dmesg, but MythTV logs: DevRdB(/dev/dvb/adapter0/frontend0) Error: Poll giving up DVBSH(/dev/dvb/adapter0/frontend0) Error: Device error detected DVBRec(7:/dev/dvb/adapter0/frontend0) Error: Stream handler died unexpectedly. Can anyone give me any pointers that might help? I've searched and searched and all I can see if people saying that it won't work since the DVB-S2 code was integrated into the kernel tree, but I've not seen anyone try to figure out _why_ it won't work. Thanks. -- - Steve -- To unsubscribe from this list: send the line unsubscribe linux-media in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
