subject:"Unrecognized Monitor"

Re: Unrecognized Monitor

2018-03-03 Thread Richard Wilson

Found my notes on how to turn off overscanning on a (Samsung) TV used as a
monitor -- the instructions I found weren't for my exact model, but I
figured it out:

I have a Samsung J5205 TV which would lose the edges of the window when a
window was maximized. Samsung Tech Support wasn't able to help me but I
found that this is a common issue with TV's due to overscanning -- it has
to be disabled for PC's. Once I found that, I searched on how to disable it
for this model TV and found an article on a similar TV at
http://www.storageforum.net/forum/showthread.php/8905-How-to-Disable-overscan-on-a-Samsung-quot-SMART-quot-tv-solved
to fix the issue: I had to press the source button on my remote, press the
tools button, then select "Edit Name" and select PC from the list.
this disabled the overscanning and solved my problem.


On Sat, Mar 3, 2018 at 2:48 PM, Victor Odhner  wrote:

> Thanks, all.
>
> I ran out of time to play with the VGA connection, although I might have
> done better by fixing the typos that were pointed out to me.
>
> I concluded that I should simply get with current technology and go all
> HDMI. That same monitor/TV automatically came up on 1080p, rock solid.
>
> I’ve learned that the VGA connection is effectively a different monitor.
> It’s good that we have xrandr and that we can hack so freely in Linux, but
> that doesn’t fit the project I’m working which may be supported by its busy
> users.
>
> As for my KVM, I can pair that other computer with my personal PC instead,
> since it was for my occasional use and 1024x768 is fine.
>
> BTW, the KVMs for HDMI run $50.
>
> Thanks Again,
> Victor
> _
>
> On 20180302, at 11:59, Matt Graham  wrote:
>
> On 2018-03-01 17:47, Richard Wilson wrote:
>
> On SouthPole, if the screen resolution doesn't come up as 1280x1024,
> then as root
>
> use xrandr to get the display name:
>
> xrandr should be usable by whoever's running the current X session.  At
> least, I've never needed root to use xrandr.
>
> [snip stuff that sounds correct and will probably work]
>
> More recently I am also using a TV as a monitor -- I had to jump
> through some hoops to disable overscanning on the HDMI port
>
>
> "xrandr --output HDMI-1 --set underscan on" should work.  The man page
> doesn't totally make that clear, but that's what worked for me.
> Confusingly enough, you can usually set one of a TV's HDMI inputs to
> something like "PC mode" where it'll expect input without overscan.  This
> causes trouble if you plug other HDMI sources into that port, since
> many/most of these output overscanned video by default.
>
> --
> Crow202 Blog: http://crow202.org/wordpress
> There is no Darkness in Eternity
> But only Light too dim for us to see.
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Re: Unrecognized Monitor

2018-03-03 Thread Victor Odhner

Thanks, all.

I ran out of time to play with the VGA connection, although I might have done 
better by fixing the typos that were pointed out to me.

I concluded that I should simply get with current technology and go all HDMI. 
That same monitor/TV automatically came up on 1080p, rock solid.

I’ve learned that the VGA connection is effectively a different monitor. It’s 
good that we have xrandr and that we can hack so freely in Linux, but that 
doesn’t fit the project I’m working which may be supported by its busy users.

As for my KVM, I can pair that other computer with my personal PC instead, 
since it was for my occasional use and 1024x768 is fine.

BTW, the KVMs for HDMI run $50.

Thanks Again,
Victor
_

On 20180302, at 11:59, Matt Graham  wrote:

On 2018-03-01 17:47, Richard Wilson wrote:
> On SouthPole, if the screen resolution doesn't come up as 1280x1024,
> then as root 
use xrandr to get the display name:

xrandr should be usable by whoever's running the current X session.  At least, 
I've never needed root to use xrandr.

[snip stuff that sounds correct and will probably work]
> More recently I am also using a TV as a monitor -- I had to jump
> through some hoops to disable overscanning on the HDMI port

"xrandr --output HDMI-1 --set underscan on" should work.  The man page doesn't 
totally make that clear, but that's what worked for me.  Confusingly enough, 
you can usually set one of a TV's HDMI inputs to something like "PC mode" where 
it'll expect input without overscan.  This causes trouble if you plug other 
HDMI sources into that port, since many/most of these output overscanned video 
by default.

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Re: Unrecognized Monitor

2018-03-02 Thread Michael Butash

It looks like the monitor simply isn't responding with the right
resolutions, like it doesn't actually do 1080p, or it would report it in
the xrandr -q.  I've run into this with old tv's and such that were
finicky, like crappy off-brand chinese tv's (ahem), and simply found
fighting them wasn't worth it to make work when usually a customer or
friends house to show something off.

If it doesn't report 1080p, it usually won't do 1080p.  Check your cable
too, I've just dealt with issues like this under windoze connected to our
noc displays.  Those were 75ft hdmi, but they wouldn't report right
resolutions until we replaced with higher-quality, shorter cables.  Yours
might just be toast.

You can get things like edid ghosters to override those sorts of things,
but it's usually dealing with some exotic hardware you're doing it.
Otherwise throw away the cable/tv, or put it in the kids room somewhere,
and get hardware that works right.

-mb

On Wed, Feb 28, 2018 at 11:08 PM, Victor Odhner  wrote:

> I'm trying to bring an unknown monitor up to full resolution.
> It's a Visio E241-A1 (TV set), claiming 1920x1080.
> I’m running Linux Mint 18.3 Sylvia, with Mate.
> The computer (a new desktop) also drives an HDMI cable to a projector, but
> that’s turned off right now.
>
> I used --newmode with xrandr and it seemed to accept that,
> but then the --addmode said it didn’t know the new mode:
>
> xrandr: cannot find mode 1920x1080_60.00
>
> Details below.
> *So, is there a way to make this work?*
>
> *The Details:*
>
> xrandr: cannot find mode 1920x1080_60.00
>
> Here's the advice I've been working for:
>
> https://unix.stackexchange.com/questions/227876/how-to-
> set-custom-resolution-using-xrandr-when-the-resolution-is-not-available-i
>
> Original source: https://gist.github.com/debloper/2793261
>
> vodhner@MusicTeam ~ $ xrandr -q
> Screen 0: minimum 8 x 8, current 1024 x 768, maximum 32767 x 32767
> DP1 connected 1024x768+0+0 (normal left inverted right x axis y axis) 0mm
> x 0mm
>1024x768  60.00*
>800x600   60.3256.25
>848x480   60.00
>640x480   59.94
> HDMI1 disconnected (normal left inverted right x axis y axis)
> HDMI2 disconnected (normal left inverted right x axis y axis)
> HDMI3 disconnected (normal left inverted right x axis y axis)
> VIRTUAL1 disconnected (normal left inverted right x axis y axis
>
> vodhner@MusicTeam ~ $ gtf 1020 1080 60
>
>   # 1024x1080 @ 60.00 Hz (GTF) hsync: 67.08 kHz; pclk: 92.30 MHz
>   Modeline "1024x1080_60.00"  92.30  1024 1088 1200 1376  1080 1081 1084
> 1118  -HSync +Vsync
>
> vodhner@MusicTeam ~ $ xrandr --newmode "1024x1080_60.00"  92.30  1024
> 1088 1200 1376  1080 1081 1084 1118  -HSync +Vsync
>
> vodhner@MusicTeam ~ $ xrandr --addmode DP1 "1920x1080_60.00"
> xrandr: cannot find mode "1920x1080_60.00"
>
> vodhner@MusicTeam ~ $ xrandr --output DP1 --mode "1920x1080_60.00"
> xrandr: cannot find mode 1920x1080_60.00
> vodhner@MusicTeam ~ $
>
> Thanks,
>
> Victor
> ___
>
>
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Re: Unrecognized Monitor

2018-03-02 Thread Matt Graham


On 2018-03-01 17:47, Richard Wilson wrote:

On SouthPole, if the screen resolution doesn't come up as 1280x1024,
then as root  use xrandr to get the display name:  


xrandr should be usable by whoever's running the current X session.  At 
least, I've never needed root to use xrandr.


[snip stuff that sounds correct and will probably work]

More recently I am also using a TV as a monitor -- I had to jump
through some hoops to disable overscanning on the HDMI port


"xrandr --output HDMI-1 --set underscan on" should work.  The man page 
doesn't totally make that clear, but that's what worked for me.  
Confusingly enough, you can usually set one of a TV's HDMI inputs to 
something like "PC mode" where it'll expect input without overscan.  
This causes trouble if you plug other HDMI sources into that port, since 
many/most of these output overscanned video by default.


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But only Light too dim for us to see.
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Re: Unrecognized Monitor

2018-03-01 Thread Richard Wilson

Victor,

I made some notes on a similar issue some time ago when I had an issue with
a monitor that would come up correctly as 1280x1024 if I used a DVI cable,
but would come up with 1024x768 if I used a VGA cable.  Here's what I have
-- this was for Dedora a few releases ago:


On SouthPole, if the screen resolution doesn't come up as 1280x1024, then
as root: use xrandr to get the display name:

# xrandr
Screen 0: minimum 320 x 200, current 1024 x 768, maximum 2048 x 2048
VGA1 connected 1024x768+0+0 (normal left inverted right x axis y axis) 0mm
x 0mm
   1024x768   60.0
   800x60060.3 56.2
   640x48059.9

use cvt to get new mode settings:

# cvt 1280 1024
# 1280x1024 59.89 Hz (CVT 1.31M4) hsync: 63.67 kHz; pclk: 109.00 MHz
Modeline "1280x1024_60.00"  109.00  1280 1368 1496 1712  1024 1027 1034
1063 -hsync +vsync

Then enter the following both interactively (to test it) and add it to
/etc/gdm/Init/Default for reboots.

xrandr --newmode "1280x1024_60.00"  109.00  1280 1368 1496 1712  1024 1027
1034 1063 -hsync +vsync xrandr --addmode VGA1 1280x1024_60.00
xrandr --output VGA1 --mode 1280x1024_60.00

These get added right after the PATH and OLD_IFS lines in the Default file.

-

I found with a later version of Fedora that the file to which to add this
is no longer at that location, but I don't know what the correct one is,
since I no longer have the issue.

More recently I am also using a TV as a monitor -- I had to jump through
some hoops to disable overscanning on the HDMI port used by my computer.
Oversanning apparently improves a broadcast picture, but for a computer you
lose the edges of the display if it's enabled.

I hope this helps you out.

Richard Wilson

On Wed, Feb 28, 2018 at 11:08 PM, Victor Odhner  wrote:

> I'm trying to bring an unknown monitor up to full resolution.
> It's a Visio E241-A1 (TV set), claiming 1920x1080.
> I’m running Linux Mint 18.3 Sylvia, with Mate.
> The computer (a new desktop) also drives an HDMI cable to a projector, but
> that’s turned off right now.
>
> I used --newmode with xrandr and it seemed to accept that,
> but then the --addmode said it didn’t know the new mode:
>
> xrandr: cannot find mode 1920x1080_60.00
>
> Details below.
> *So, is there a way to make this work?*
>
> *The Details:*
>
> xrandr: cannot find mode 1920x1080_60.00
>
> Here's the advice I've been working for:
>
> https://unix.stackexchange.com/questions/227876/how-to-
> set-custom-resolution-using-xrandr-when-the-resolution-is-not-available-i
>
> Original source: https://gist.github.com/debloper/2793261
>
> vodhner@MusicTeam ~ $ xrandr -q
> Screen 0: minimum 8 x 8, current 1024 x 768, maximum 32767 x 32767
> DP1 connected 1024x768+0+0 (normal left inverted right x axis y axis) 0mm
> x 0mm
>1024x768  60.00*
>800x600   60.3256.25
>848x480   60.00
>640x480   59.94
> HDMI1 disconnected (normal left inverted right x axis y axis)
> HDMI2 disconnected (normal left inverted right x axis y axis)
> HDMI3 disconnected (normal left inverted right x axis y axis)
> VIRTUAL1 disconnected (normal left inverted right x axis y axis
>
> vodhner@MusicTeam ~ $ gtf 1020 1080 60
>
>   # 1024x1080 @ 60.00 Hz (GTF) hsync: 67.08 kHz; pclk: 92.30 MHz
>   Modeline "1024x1080_60.00"  92.30  1024 1088 1200 1376  1080 1081 1084
> 1118  -HSync +Vsync
>
> vodhner@MusicTeam ~ $ xrandr --newmode "1024x1080_60.00"  92.30  1024
> 1088 1200 1376  1080 1081 1084 1118  -HSync +Vsync
>
> vodhner@MusicTeam ~ $ xrandr --addmode DP1 "1920x1080_60.00"
> xrandr: cannot find mode "1920x1080_60.00"
>
> vodhner@MusicTeam ~ $ xrandr --output DP1 --mode "1920x1080_60.00"
> xrandr: cannot find mode 1920x1080_60.00
> vodhner@MusicTeam ~ $
>
> Thanks,
>
> Victor
> ___
>
>
> ---
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Re: Unrecognized Monitor stuck at 1024x768

2018-03-01 Thread Matt Graham


On 2018-03-01 10:43, Matt Graham wrote:

On 2018-03-01 09:35, Victor Odhner wrote:
I don't think you'll be able to drive a monitor at 1920x1080 using
VGA.


Never mind, Pickyweedia says you can probably do that as long as the 
cable is less than 15 feet long.



Typos cause troubles :-)  The line also looks wrong to me, as
it doesn't have any numbers >= 1920 in it, and it should if
it's specifying a resolution 1920 pixels wide.



vodhner@MusicTeam ~ $ gtf 1020 1080 60


...I think you'll have a better shot at this if you s/1020/1920/ in the 
above command.  The KVM will have to be able to handle the high 
resolution.  If it doesn't, nothing will work.  However, they also make 
multi-port HDMI switchers, so you could potentially buy one of those and 
go that way.


--
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Re: Unrecognized Monitor stuck at 1024x768

2018-03-01 Thread Matt Graham


On 2018-03-01 09:35, Victor Odhner wrote:

It's a Visio E241-A1 (TV set), claiming 1920x1080.
I’m running Linux Mint 18.3 Sylvia, with Mate.
vodhner@MusicTeam ~ $ xrandr -q
DP1 connected 1024x768+0+0 1024x768 60.00*
vodhner@MusicTeam ~ $ xrandr --newmode "1024x1080_60.00" 92.30 1024
1088 1200 1376 1080 1081 1084 1118 -HSync +Vsync
vodhner@MusicTeam ~ $ xrandr --addmode DP1 "1920x1080_60.00"
xrandr: cannot find mode "1920x1080_60.00"

I'm using the VGA port since I'm talking to this monitor via a KVM
that only knows VGA.


I don't think you'll be able to drive a monitor at 1920x1080 using VGA. 
You'll have to use something a little more advanced to get more than 
about 1280x1024, because VGA was intended for analog displays that were 
much smaller.  The xrandr command says you're running on a DisplayPort, 
which will easily do higher resolutions, but the KVM you're using will 
almost certainly downsample whatever it gets.


Also, have another look at the new Modeline you put in.  You called it 
"1024x1080_60.00" and you're trying to use "1920x1080_60.00", which of 
course does not exist.  Typos cause troubles :-)  The line also looks 
wrong to me, as it doesn't have any numbers >= 1920 in it, and it should 
if it's specifying a resolution 1920 pixels wide.


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Re: Unrecognized Monitor stuck at 1024x768

2018-03-01 Thread Victor Odhner

I went the easy way too, but Linux doesn’t recognize the monitor (hence the 
subject line) and offers a max of 1024x768 which doesn’t even fill the screen.

I also searched for Visio drivers and found none.

The “xrandr” method shown below seems to be the tool currently used to force 
resolution on an unknown monitor.
After five years “in recovery” from hacking Linux, I’m re-learning . . .

I’m using the VGA port since I’m talking to this monitor via a KVM that only 
knows VGA. I’ll try HDMI temporarily but then I won’t be able to juggle 
operation with a Mac Mini.

___

On 20180301, at 05:06, kitepi...@kitepilot.com wrote:

I am a simple guy, so I go the easy way first...   :)
I have been able to control any display (including HDMI, 2 VGA's in a DVI) on 
desktops and laptops using 'Menu' -> 'Preferences' -> 'Display'
And it is persistent.
What problem are you having with it?
ET 
__

Victor Odhner writes: 

I'm trying to bring an unknown monitor up to full resolution.
It's a Visio E241-A1 (TV set), claiming 1920x1080.
I’m running Linux Mint 18.3 Sylvia, with Mate.
The computer (a new desktop) also drives an HDMI cable to a projector, but 
that’s turned off right now.

I used --newmode with xrandr and it seemed to accept that,
but then the --addmode said it didn’t know the new mode:

xrandr: cannot find mode 1920x1080_60.00

Details below.
So, is there a way to make this work?

The Details:

xrandr: cannot find mode 1920x1080_60.00

Here's the advice I've been working for:

https://unix.stackexchange.com/questions/227876/how-to-set-custom-resolution-using-xrandr-when-the-resolution-is-not-available-i
 


Original source: https://gist.github.com/debloper/2793261 


vodhner@MusicTeam ~ $ xrandr -q
Screen 0: minimum 8 x 8, current 1024 x 768, maximum 32767 x 32767
DP1 connected 1024x768+0+0 (normal left inverted right x axis y axis) 0mm x 0mm
   1024x768  60.00* 
   800x600   60.3256.25  
   848x480   60.00  
   640x480   59.94  
HDMI1 disconnected (normal left inverted right x axis y axis)
HDMI2 disconnected (normal left inverted right x axis y axis)
HDMI3 disconnected (normal left inverted right x axis y axis)
VIRTUAL1 disconnected (normal left inverted right x axis y axis

vodhner@MusicTeam ~ $ gtf 1020 1080 60

  # 1024x1080 @ 60.00 Hz (GTF) hsync: 67.08 kHz; pclk: 92.30 MHz
  Modeline "1024x1080_60.00"  92.30  1024 1088 1200 1376  1080 1081 1084 1118  
-HSync +Vsync

vodhner@MusicTeam ~ $ xrandr --newmode "1024x1080_60.00"  92.30  1024 1088 1200 
1376  1080 1081 1084 1118  -HSync +Vsync

vodhner@MusicTeam ~ $ xrandr --addmode DP1 "1920x1080_60.00"
xrandr: cannot find mode "1920x1080_60.00"

vodhner@MusicTeam ~ $ xrandr --output DP1 --mode "1920x1080_60.00"
xrandr: cannot find mode 1920x1080_60.00
vodhner@MusicTeam ~ $ 

Thanks,

Victor

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Re: Unrecognized Monitor

2018-03-01 Thread kitepilot


I am a simple guy, so I go the easy way first...   :)
I have been able to control any display (including HDMI, 2 VGA's in a DVI) 
on desktops and laptops using 'Menu' -> 'Preferences' -> 'Display'

And it is persistent.
What problem are you having with it?
ET 




Victor Odhner writes: 


I'm trying to bring an unknown monitor up to full resolution.
It's a Visio E241-A1 (TV set), claiming 1920x1080.
I’m running Linux Mint 18.3 Sylvia, with Mate.
The computer (a new desktop) also drives an HDMI cable to a projector, but that’s turned off right now. 


I used --newmode with xrandr and it seemed to accept that,
but then the --addmode said it didn’t know the new mode: 

xrandr: cannot find mode 1920x1080_60.00 


Details below.
So, is there a way to make this work? 

The Details: 

xrandr: cannot find mode 1920x1080_60.00 

Here's the advice I've been working for: 

https://unix.stackexchange.com/questions/227876/how-to-set-custom-resolution-using-xrandr-when-the-resolution-is-not-available-i 

Original source: https://gist.github.com/debloper/2793261 


vodhner@MusicTeam ~ $ xrandr -q
Screen 0: minimum 8 x 8, current 1024 x 768, maximum 32767 x 32767
DP1 connected 1024x768+0+0 (normal left inverted right x axis y axis) 0mm x 0mm
   1024x768  60.00* 
   800x600   60.3256.25  
   848x480   60.00  
   640x480   59.94  
HDMI1 disconnected (normal left inverted right x axis y axis)

HDMI2 disconnected (normal left inverted right x axis y axis)
HDMI3 disconnected (normal left inverted right x axis y axis)
VIRTUAL1 disconnected (normal left inverted right x axis y axis 

vodhner@MusicTeam ~ $ gtf 1020 1080 60 


  # 1024x1080 @ 60.00 Hz (GTF) hsync: 67.08 kHz; pclk: 92.30 MHz
  Modeline "1024x1080_60.00"  92.30  1024 1088 1200 1376  1080 1081 1084 1118  -HSync +Vsync 

vodhner@MusicTeam ~ $ xrandr --newmode "1024x1080_60.00"  92.30  1024 1088 1200 1376  1080 1081 1084 1118  -HSync +Vsync 


vodhner@MusicTeam ~ $ xrandr --addmode DP1 "1920x1080_60.00"
xrandr: cannot find mode "1920x1080_60.00" 


vodhner@MusicTeam ~ $ xrandr --output DP1 --mode "1920x1080_60.00"
xrandr: cannot find mode 1920x1080_60.00
vodhner@MusicTeam ~ $  

Thanks, 


Victor
___ 


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Unrecognized Monitor

2018-02-28 Thread Victor Odhner

I'm trying to bring an unknown monitor up to full resolution.
It's a Visio E241-A1 (TV set), claiming 1920x1080.
I’m running Linux Mint 18.3 Sylvia, with Mate.
The computer (a new desktop) also drives an HDMI cable to a projector, but 
that’s turned off right now.

I used --newmode with xrandr and it seemed to accept that,
but then the --addmode said it didn’t know the new mode:

xrandr: cannot find mode 1920x1080_60.00

Details below.
So, is there a way to make this work?

The Details:

xrandr: cannot find mode 1920x1080_60.00

Here's the advice I've been working for:

https://unix.stackexchange.com/questions/227876/how-to-set-custom-resolution-using-xrandr-when-the-resolution-is-not-available-i

Original source: https://gist.github.com/debloper/2793261

vodhner@MusicTeam ~ $ xrandr -q
Screen 0: minimum 8 x 8, current 1024 x 768, maximum 32767 x 32767
DP1 connected 1024x768+0+0 (normal left inverted right x axis y axis) 0mm x 0mm
   1024x768  60.00* 
   800x600   60.3256.25  
   848x480   60.00  
   640x480   59.94  
HDMI1 disconnected (normal left inverted right x axis y axis)
HDMI2 disconnected (normal left inverted right x axis y axis)
HDMI3 disconnected (normal left inverted right x axis y axis)
VIRTUAL1 disconnected (normal left inverted right x axis y axis

vodhner@MusicTeam ~ $ gtf 1020 1080 60

  # 1024x1080 @ 60.00 Hz (GTF) hsync: 67.08 kHz; pclk: 92.30 MHz
  Modeline "1024x1080_60.00"  92.30  1024 1088 1200 1376  1080 1081 1084 1118  
-HSync +Vsync

vodhner@MusicTeam ~ $ xrandr --newmode "1024x1080_60.00"  92.30  1024 1088 1200 
1376  1080 1081 1084 1118  -HSync +Vsync

vodhner@MusicTeam ~ $ xrandr --addmode DP1 "1920x1080_60.00"
xrandr: cannot find mode "1920x1080_60.00"

vodhner@MusicTeam ~ $ xrandr --output DP1 --mode "1920x1080_60.00"
xrandr: cannot find mode 1920x1080_60.00
vodhner@MusicTeam ~ $ 

Thanks,

Victor
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