Kernel Bug Tracker – Bug 66861
Device ID 2013:024f PCTV Systems nanoStick T2 290e fails with 3.10.22-1.el6.elrepoNONPAE.i686; previously OK
Last modified: 2013-12-22 22:19:18 UTC
This device has worked with earlier versions of the elrepo kernel, since May 2013. It still works with 3.10.21-1
With 3.10.22-1, and with 3.10.23-1, dmesg has /NOT/ reported "em28174 #0: Successfully loaded em28xx-dvb," an adapter has not been created, and no TV reception has been possible.
The problem appears to be in i2c_transfer to the tda18271 chip. dmesg shows:
tda18271 8-0060: creating new instance
tda18271_read_regs: [8-0060|M] ERROR: i2c_transfer returned: -19
Error reading device ID @ 8-0060, bailing out.
tda18271_attach: [8-0060|M] error -5 on line 1285
tda18271 8-0060: destroying instance
https://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.10.22 [^] has a commit affecting the tda18271 chip causing the dmesg error above. It could affect a lot of other chips too :-(
As a test, I have plugged the same device into my Fedora 18 box. dmesg on that does /NOT/ show this error.
24742.813920] TDA18271HD/C2 detected @ 8-0060
[24742.981302] DVB: registering new adapter (em28174 #0)
[24742.981313] usb 1-2: DVB: registering adapter 4 frontend 0 (Sony CXD2820R)...
[24742.984337] em28174 #0: Successfully loaded em28xx-dvb
[24742.984343] Em28xx: Initialized (Em28xx dvb Extension) extension
More details at http://elrepo.org/bugs/view.php?id=438
This regression occurred in linux-3.10.22
Here at Archlinux we have the same problem, but with kernel version 3.12.3 previous version 3.12.2 (and older) worked fine.
See the thread at <https://bbs.archlinux.org/viewtopic.php?id=173982>
Comment on blog.
"FYI, working just fine on 3.11.0-15-generic (Ubuntu 13.10, kept up-to-date)."
It's working again with 3.10.25-1.el6.elrepoNONPAE.i686