• Viewfinder question? Or perhaps HDMI.

    From Dave Plowman (News)@21:1/5 to All on Mon Mar 28 15:09:58 2022
    I have an RPC with Viewfinder card. PC too. Both have DVI outputs going
    through a DVI KVM switch to a DVI monitor input.
    Since the RPC is used to store wiring etc schematics in my workshop, the monitor feed is split to DVI and HDMI - the HDMI feed going to a small TV
    above the workbench. All worked just fine.

    After replacing another TV in the house I decided to use the replaced one
    in the workshop. As it is more modern and a bigger screen than the
    existing one.

    Now, the RPC doesn't show a picture at all to its monitor on boot - unless
    the TV is switched on. Bring the TV from standby - even when HDMI not
    selected - and the RPC monitor works as normal. I can then switch off the
    TV.

    The 'new' TV is very much better than the old one - given my aging eyes -
    and I'd like to keep it.

    Viewfinder is set to 1600x900 74Hz if that helps at all.

    --
    *Errors have been made. Others will be blamed.

    Dave Plowman dave@davenoise.co.uk London SW
    To e-mail, change noise into sound.

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Chris Evans (CJE/4D)@21:1/5 to URL:mailto:dave@davenoise.co.uk on Thu Mar 31 16:22:57 2022
    In article <59d049156bdave@davenoise.co.uk>, Dave Plowman (News) <URL:mailto:dave@davenoise.co.uk> wrote:
    I have an RPC with Viewfinder card. PC too. Both have DVI outputs going through a DVI KVM switch to a DVI monitor input.
    Since the RPC is used to store wiring etc schematics in my workshop, the monitor feed is split to DVI and HDMI - the HDMI feed going to a small TV above the workbench. All worked just fine.

    After replacing another TV in the house I decided to use the replaced one
    in the workshop. As it is more modern and a bigger screen than the
    existing one.

    Now, the RPC doesn't show a picture at all to its monitor on boot - unless the TV is switched on. Bring the TV from standby - even when HDMI not selected - and the RPC monitor works as normal. I can then switch off the TV.

    The 'new' TV is very much better than the old one - given my aging eyes -
    and I'd like to keep it.

    Viewfinder is set to 1600x900 74Hz if that helps at all.

    Yes rather strange.

    I'd try swapping the ports used on the KVM

    I'm not sure if changing minitortype and sync from auto affects anything
    when a ViewFinder is in use but if the DVI swap doesn't work I'd try that.


    Chris Evans

    --

    ****** IGEPv5: The fastest RISC OS computer so far! *******
    ------------ http://www.cjemicros.co.uk/igepv5 ------------
    CJE Micro's 'Raspberry Pi & RISC OS Specialists'
    Tel: +44 (0)1903 523222
    chris@cjemicros.co.uk http://www.cjemicros.co.uk/
    Unit 16 Arunside Ind. Est., Fort Road, Littlehampton, W.Sussex BN17 7QU

    Don't let the urgent things in life, crowd out the important things!

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Dave Plowman (News)@21:1/5 to chris@cjemicros.co.uk on Sun Apr 3 14:53:37 2022
    In article <ant311557e61pErr@client.cjemicros.co.uk>,
    Chris Evans (CJE/4D) <chris@cjemicros.co.uk> wrote:
    In article <59d049156bdave@davenoise.co.uk>, Dave Plowman (News) <URL:mailto:dave@davenoise.co.uk> wrote:
    I have an RPC with Viewfinder card. PC too. Both have DVI outputs
    going through a DVI KVM switch to a DVI monitor input. Since the RPC
    is used to store wiring etc schematics in my workshop, the monitor
    feed is split to DVI and HDMI - the HDMI feed going to a small TV
    above the workbench. All worked just fine.

    After replacing another TV in the house I decided to use the replaced
    one in the workshop. As it is more modern and a bigger screen than the existing one.

    Now, the RPC doesn't show a picture at all to its monitor on boot -
    unless the TV is switched on. Bring the TV from standby - even when
    HDMI not selected - and the RPC monitor works as normal. I can then
    switch off the TV.

    The 'new' TV is very much better than the old one - given my aging
    eyes - and I'd like to keep it.

    Viewfinder is set to 1600x900 74Hz if that helps at all.

    Yes rather strange.

    I'd try swapping the ports used on the KVM

    No difference.

    I'm not sure if changing minitortype and sync from auto affects anything
    when a ViewFinder is in use but if the DVI swap doesn't work I'd try
    that.

    The Viewfinder card seems pretty independent of the basic RPC monitor
    settings.


    I have an active HDMI switch used with the TV in the living room. 4 in, 2
    out. Allows me to feed the PVR etc to the TV in the kitchen.

    Nicked that to experiment. If I insert it in the feed to the TV, and
    switch it to no input, the RPC boots OK to the monitor. If then switch it
    the KVM feed, both the TV and monitor work just fine.

    So found a same make 2 x 1 HDMI switch on Ebay used for not a lot, which
    has just arrived. That does the job too. Not a perfect solution, but the
    best work round I've found.

    I'd guess the TV is sending a 'control signal'? back up the HDMI circuit
    the Viewfinder card doesn't like.

    --
    *If you think this van is dirty, you should try having sex with the driver*

    Dave Plowman dave@davenoise.co.uk London SW
    To e-mail, change noise into sound.

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Chris Evans (CJE/4D)@21:1/5 to URL:mailto:dave@davenoise.co.uk on Fri Apr 8 17:01:03 2022
    In article <59d35e99ecdave@davenoise.co.uk>, Dave Plowman (News) <URL:mailto:dave@davenoise.co.uk> wrote:
    In article <ant311557e61pErr@client.cjemicros.co.uk>,
    Chris Evans (CJE/4D) <chris@cjemicros.co.uk> wrote:
    In article <59d049156bdave@davenoise.co.uk>, Dave Plowman (News) <URL:mailto:dave@davenoise.co.uk> wrote:
    I have an RPC with Viewfinder card. PC too. Both have DVI outputs
    going through a DVI KVM switch to a DVI monitor input. Since the RPC
    is used to store wiring etc schematics in my workshop, the monitor
    feed is split to DVI and HDMI - the HDMI feed going to a small TV
    above the workbench. All worked just fine.

    After replacing another TV in the house I decided to use the replaced
    one in the workshop. As it is more modern and a bigger screen than the existing one.

    Now, the RPC doesn't show a picture at all to its monitor on boot - unless the TV is switched on. Bring the TV from standby - even when
    HDMI not selected - and the RPC monitor works as normal. I can then switch off the TV.

    The 'new' TV is very much better than the old one - given my aging
    eyes - and I'd like to keep it.

    Viewfinder is set to 1600x900 74Hz if that helps at all.

    Yes rather strange.

    I'd try swapping the ports used on the KVM

    No difference.

    I'm not sure if changing minitortype and sync from auto affects anything when a ViewFinder is in use but if the DVI swap doesn't work I'd try
    that.

    The Viewfinder card seems pretty independent of the basic RPC monitor settings.


    I have an active HDMI switch used with the TV in the living room. 4 in, 2 out. Allows me to feed the PVR etc to the TV in the kitchen.

    Nicked that to experiment. If I insert it in the feed to the TV, and
    switch it to no input, the RPC boots OK to the monitor. If then switch it
    the KVM feed, both the TV and monitor work just fine.

    So found a same make 2 x 1 HDMI switch on Ebay used for not a lot, which
    has just arrived. That does the job too. Not a perfect solution, but the
    best work round I've found.

    I'd guess the TV is sending a 'control signal'? back up the HDMI circuit
    the Viewfinder card doesn't like.

    Glad to hear you found a work around.


    Chris Evans

    --

    ****** IGEPv5: The fastest RISC OS computer so far! *******
    ------------ http://www.cjemicros.co.uk/igepv5 ------------
    CJE Micro's 'Raspberry Pi & RISC OS Specialists'
    Tel: +44 (0)1903 523222
    chris@cjemicros.co.uk http://www.cjemicros.co.uk/
    Unit 16 Arunside Ind. Est., Fort Road, Littlehampton, W.Sussex BN17 7QU

    Don't let the urgent things in life, crowd out the important things!

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)