driver `bt869.o' request for support (fwd)

Frodo Looijaard frodol at
Thu Feb 13 07:53:23 CET 2003

Carlo Gebhardt wrote:
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Subject: driver `bt869.o' request for support
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I have a problem using the bt869 module with my voodoo3 3500 and tv-out.

insmod the modules
Using /lib/modules/2.4.20/kernel/drivers/i2c/i2c-voodoo3.o
i2c-voodoo3.o version 2.7.0 (20021208)
i2c-voodoo3: Using Banshee/Voodoo3 at 0xe8861000
i2c-voodoo3: 1 Banshee/Voodoo3 found.
i2c-voodoo3.o: I2C bus initialized
i2c-voodoo3.o: DDC bus initialized
Using /lib/modules/2.4.20/kernel/drivers/sensors/bt869.o
bt869.o version 2.7.0 (20021208)
bt869.o:  probing address 68 .
bt869.o: address 0x44 testing-->0x22
bt869.o: BT869 detected
bt869.o: write_value(0xBA, 0x80)
bt869.o: write_value(0xA0, 0x80)
bt869.o: write_value(0xBA, 0x20)
bt869.o: write_value(0xC6, 0x1)
bt869.o: write_value(0xC4, 0x1)
bt869.o: write_value(0xC8, 0x0)
here i can see my console on the tv but it looks bizzar.
i guess its an NTSC-signal
but changing the proc-values leads to an black tv
ether no signal or something else
even cat'ing the values leads to an bt869 update and a black screen
i have tried changing the default values in the drivers to my fits but i 
didnt' work.
unloading the driver und reloading it brings me back to the console to 
the tv which looks bizzar.

changing values
Nebuchadnezzar:~# echo "0" >/proc/sys/dev/sensors/bt869-i2c-0-44/ntsc
Starting bt869 update
bt869.o: write_value(0xB8, 0x1)
bt869.o: write_value(0xA0, 0x8C)
bt869.o: writing into config -->0x1
bt869.o: write_value(0xC6, 0x1)
bt869.o: write_value(0xD4, 0x0)
bt869.o: write_value(0xCE, 0x0)
bt869.o: write_value(0xBA, 0x21)
bt869.o: write_value(0xC4, 0x1)
bt869.o: write_value(0x6C, 0x80)
bt869.o: write_value(0xC4, 0x1)
bt869.o: write_value(0xC4, 0x41)
bt869.o: write_value(0xC4, 0x81)
bt869.o: write_value(0xC4, 0xC1)


Nebuchadnezzar:~# lsmod
Module                  Size  Used by    Not tainted
ddcmon                  3116   0  (unused)
eeprom                  3536   0  (unused)
i2c-isa                 1228   0  (unused)
i2c-viapro              3892   0  (unused)
i2c-voodoo3             2576   0  (unused)
i2c-algo-bit            8264   2  [i2c-voodoo3]
bt869                   5444   0  (unused)
i2c-proc                6480   0  [ddcmon eeprom bt869]
i2c-core               14544   0  [ddcmon eeprom i2c-isa i2c-viapro 
i2c-algo-bit bt869 i2c-proc]

lspci -vv
01:00.0 VGA compatible controller: 3Dfx Interactive, Inc. Voodoo 3 (rev 
01) (prog-if 00 [VGA])
Subsystem: 3Dfx Interactive, Inc. Voodoo3 3500 TV (PAL)
Control: I/O+ Mem+ BusMaster- SpecCycle- MemWINV- VGASnoop- ParErr- 
Stepping- SERR- FastB2B-
Status: Cap+ 66Mhz+ UDF- FastB2B+ ParErr- DEVSEL=fast >TAbort- <TAbort- 
<MAbort- >SERR- <PERR+
Interrupt: pin A routed to IRQ 7
Region 0: Memory at d4000000 (32-bit, non-prefetchable) [size=32M]
Region 1: Memory at d8000000 (32-bit, prefetchable) [size=32M]
        Region 2: I/O ports at 8000 [size=256]
        Expansion ROM at <unassigned> [disabled] [size=64K]
        Capabilities: [54] AGP version 1.0
        Status: RQ=7 SBA+ 64bit+ FW- Rate=x1,x2
        Command: RQ=0 SBA- AGP- 64bit- FW- Rate=<none>
       Capabilities: [60] Power Management version 1
        Flags: PMEClk- DSI+ D1- D2- AuxCurrent=0mA 
        Status: D0 PME-Enable- DSel=0 DScale=0 PME-

Frodo Looijaard <frodol at>  PGP key and more:
Defenestration n. (formal or joc.):
  The act of removing Windows from your computer in disgust, usually followed
  by the installation of Linux or some other Unix-like operating system.

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