1d19:1102 driver Realtek RTL2832 (DVB-T) not working in 32-bit, does in 64-bit

[WoodyEckelzone]

I have a Dexatek Technology Ltd. DK mini DVB-T Dongle. Rtl2832U based. It doesn't work on 13.10 386/686 machines, it skips the (Dutch) free to air channels (618000):
618000: (time: 01:17) (time: 01:19) signal ok:
 QAM_AUTO f = 618000 kHz I999B8C999D999T999G999Y999
Info: no data from NIT(actual)

BTW it is correctly recognized as per dmesg:
 [ 1373.824423] usb 1-4: Product: Rtl2832UDVB
[ 1373.824429] usb 1-4: Manufacturer: Realtek
[ 1373.824435] usb 1-4: SerialNumber: 1
[ 1373.830010] usb 1-4: dvb_usb_v2: found a 'Dexatek DK mini DVB-T Dongle' in warm state
[ 1373.885557] usb 1-4: dvb_usb_v2: will pass the complete MPEG2 transport stream to the software demuxer
[ 1373.885584] DVB: registering new adapter (Dexatek DK mini DVB-T Dongle)
[ 1373.889003] usb 1-4: DVB: registering adapter 0 frontend 0 (Realtek RTL2832 (DVB-T))...

w_scan
Info: using DVB adapter auto detection.
 /dev/dvb/adapter0/frontend0 -> TERRESTRIAL "Realtek RTL2832 (DVB-T)": good :-)

WORKAROUND: It works fine on several (X)Ubuntu 13.10 64 bits machines.

ProblemType: Bug
DistroRelease: Ubuntu 13.10
Package: linux-image-3.11.0-15-generic 3.11.0-15.23
ProcVersionSignature: Ubuntu 3.11.0-15.23-generic 3.11.10
Uname: Linux 3.11.0-15-generic i686
ApportVersion: 2.12.5-0ubuntu2.2
Architecture: i386
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC0: ben 1268 F.... pulseaudio
Date: Fri Jan 17 13:42:59 2014
HibernationDevice: RESUME=UUID=76b60f25-c474-495a-b70d-e20e59e2196f
InstallationDate: Installed on 2014-01-17 (0 days ago)
InstallationMedia: Xubuntu 13.10 "Saucy Salamander" - Release i386 (20131016)
MachineType: Acer, inc. TravelMate 4670
MarkForUpload: True
PccardctlIdent:
 Socket 0:
   no product info available
PccardctlStatus:
 Socket 0:
   no card
ProcFB: 0 radeondrmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.11.0-15-generic root=UUID=9131a6cc-f96d-4acf-b474-6c2c5c0b5535 ro quiet splash vt.handoff=7
RelatedPackageVersions:
 linux-restricted-modules-3.11.0-15-generic N/A
 linux-backports-modules-3.11.0-15-generic N/A
 linux-firmware 1.116
SourcePackage: linux
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 01/12/07
dmi.bios.vendor: Acer
dmi.bios.version: v1.3239
dmi.board.name: Bodensee
dmi.board.vendor: Acer, Inc.
dmi.board.version: Not Applicable
dmi.chassis.type: 1
dmi.chassis.vendor: Acer, Inc.
dmi.chassis.version: N/A
dmi.modalias: dmi:bvnAcer:bvrv1.3239:bd01/12/07:svnAcer,inc.:pnTravelMate4670:pvrNotApplicable:rvnAcer,Inc.:rnBodensee:rvrNotApplicable:cvnAcer,Inc.:ct1:cvrN/A:
dmi.product.name: TravelMate 4670
dmi.product.version: Not Applicable
dmi.sys.vendor: Acer, inc.

[WoodyEckelzone (bcr497)]

FYI it also doesn't work on a Raspberry Pi.
Although recognized it also skips the 618000 channels.

[WoodyEckelzone (bcr497)]

I also tried to build it from here:
http://git.linuxtv.org/media_build.git

No improvements

[Brad Figg (brad-figg)]

This change was made by a bot.

[WoodyEckelzone (bcr497)]

Is this of interest?
http://<email address hidden>/msg66429.html

[WoodyEckelzone (bcr497)]

BTW the tuner in the card is a FCI 2580

[Joseph Salisbury (jsalisbury)]

Would it be possible for you to test the latest upstream kernel? Refer to https://wiki.ubuntu.com/KernelMainlineBuilds . Please test the latest v3.13 kernel[0].

If this bug is fixed in the mainline kernel, please add the following tag 'kernel-fixed-upstream'.

If the mainline kernel does not fix this bug, please add the tag: 'kernel-bug-exists-upstream'.

If you are unable to test the mainline kernel, for example it will not boot, please add the tag: 'kernel-unable-to-test-upstream'.
Once testing of the upstream kernel is complete, please mark this bug as "Confirmed".

Thanks in advance.

[0] http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.13-rc8-trusty/

[WoodyEckelzone (bcr497)]

@Joseph.
Not fixed in v3.13-rc8-trusty

uname -r
3.13.0-031300rc8-generic

Seems worse because w_scan now really skips 618000

610000: (time: 01:14)
618000: (time: 01:17) (time: 01:19)
626000: (time: 01:20)

[WoodyEckelzone (bcr497)]

FYI
I also tried 3.13.0-031300rc8-generic on my other amd64 machine
It is working there

The dongle was working fine on the same 32 bits machine Xubuntu 12.04 with:
DVB-Realtek-RTL2832U-2.2.2-10tuner-mod_kernel-3.0.0
https://github.com/ambrosa/DVB-Realtek-RTL2832U-2.2.2-10tuner-mod_kernel-3.0.0.git

[WoodyEckelzone (bcr497)]

Raspberry Pi issue:
https://github.com/raspberrypi/linux/issues/502