"dvb" no /dev/dvb

[hedmo]

hi i just upgrade from skystar 2 to skystar s2 and i thought it should be no problem but there were
i lost my /dev/dvb and dont know why. here is some info

ybox ~ # dmesg | grep DVB
[ 4.232615] DVB: registering new adapter (FlexCop Digital TV device)
mybox ~ # lsmod
Module Size Used by
mt312 8260 0
stv0297 7696 0
bcm3510 9396 0
lgdt330x 9220 0
nxt200x 13332 0
mt352 6916 0
stv0299 10552 0
b2c2_flexcop_pci 8468 0
b2c2_flexcop 31084 1 b2c2_flexcop_pci
dvb_core 91264 3 lgdt330x,stv0299,b2c2_flexcop
cx24123 14408 1 b2c2_flexcop
fglrx 2394136 170
cx24113 8052 1 b2c2_flexcop
s5h1420 11940 1 b2c2_flexcop
mybox ~ #

[updatelee]

I dont have an answer for you, but I'll give you somewhere to look.

udev is responsible for building /dev/dvb nodes so It apears to be a udev issue, look into MKDEV or MAKEDEV cant rem the exact name of the script.

[chithanh]

If it worked with the old device, it is probably not an udev issue. More likely your kernel is not configured correctly (maybe missing tuner/frontend support) or the device requires different firmware. (Unfiltered) dmesg usually has more information.

[hedmo]

jepp i think it is à frontend thing to. the old card
was for mpeg 2 and this is for 4 as i understand
it .but i dont understand what /dev/dvb has to do
with it.correct me, if udev see it it should be in dev.
my old card Did not have à frontend in dev ,there were
only /dev/dvb/device0 .i have read the gentoo vdr doc
and the budget cards wont have to have more then just
the kernel stuff.it can be à to old kernel (2.6.31)so i am
on to update but got some problem with(2.6.35) i hope that
is the problem

[chithanh]

The /dev/dvb device will only appear if the kernel has the correct driver for chipset/frontend/tuner and firmware is installed.

If the /dev/dvb device does not appear, this usually means that one of those is missing.

[hedmo]

i still dont get it to work

mybox hedmo # lspci -k | grep -A5 Sky
01:05.0 Network controller: Techsan Electronics Co Ltd B2C2 FlexCopII DVB chip / Technisat SkyStar2 DVB card (rev 02)
Subsystem: Techsan Electronics Co Ltd B2C2 FlexCopII DVB chip / Technisat SkyStar2 DVB card
Kernel modules: b2c2-flexcop-pci

how do i find out more whats missing

[chithanh]

I thought I made myself clear already.

1. Find out the correct chipset driver.
2. Find out the correct tuner driver (if any).
3. Find out the correct frontend driver (if any).
4. Find out the correct firmware.

And verify with lspci -k (kernel driver in use) and dmesg that these things are loaded correctly. If you post here, then give unfiltered output.

[piewie]

Technisat SkyStar HD2:

Code: Select all

/usr/sbin/lspci
07:02.0 Multimedia controller: Twinhan Technology Co. Ltd Mantis DTV PCI Bridge Controller [Ver 1.0] (rev 01)

Code: Select all

lsmod
mantis                 16578  0 
mantis_core            28555  1 mantis
ir_nec_decoder          3561  0 
ir_common               4916  1 mantis_core
ir_core                13076  7 ir_sony_decoder,ir_jvc_decoder,ir_rc6_decoder,ir_rc5_decoder,mantis_core,ir_nec_decoder,ir_common
tda665x                 3069  1 mantis
lnbp21                  1930  1 mantis
mb86a16                18056  1 mantis
stb6100                 6147  1 mantis
tda10021                5470  1 mantis
tda10023                5930  1 mantis
zl10353                 6608  1 mantis
stb0899                30801  1 mantis
stv0299                 8977  1 mantis
dvb_core               85518  2 mantis_core,stv0299

modprobe mantis delivers usefull information.
firmware is not necessary.

[hedmo]

okej i have looked for some answers and did not come up to any ting.
from what i have find from the install guide is the same as in the gentoo-sources
so how do i make it work.


select the device/card-drivers to compile and install

# make menuconfig

follow the menus and enable at least

<M> Technisat/B2C2 FlexCopII(b) and FlexCopIII adapters
<M> Technisat/B2C2 Air/Sky/Cable2PC PCI
<M> Technisat/B2C2 Air/Sky/Cable2PC USB

4) Install firmware binary

The CX24120 requires a firmware to operate normally. The file is called "dvb-fe-cx24120-1.20.58.2.fw" and has to be put into the system's firmware directory.

/usr/lib/hotplug/firmware
or
/lib/firmware

for example you can do:
# cp <path-to-binary-file>/dvb-fe-cx24120-1.20.58.2.fw /usr/lib/hotplug/firmware

[jannis]

Don't know if this is still an issuer but here is something that looks like a resolution:
http://linuxtv.org/wiki/index.php/TechniSat_SkyStar_S2

And: TechniSat SkyStar S2 != TechniSat SkyStar HD2. So the mantis-stuff posted above will not work!

[hedmo]

a time ago,i manage to get the frontend cx24120 to work in the 2.6.37 kernel.last day i was updating
and updated to 2.6.38-r5.did my kernel setup.but when i make && make modules_install
and re enter menuconfig,allmost all dvb stuff is gone and this happends with all kernels
that i am upgrading after 2.6.37.

[FizzyWidget]

If its anything like my TV card you have to build them as modules, if i build them built in i don't see anything

[jannis]

My SkyStar S2 is running fine with 3.1.0
I can send you patch if you still need it.