1680x1050 not working VGA

[xencored]

Hey I am trying to get 1680x1050 to work but for the life of me It will not work.

This is my config.txt

Code: Select all

# uncomment if you get no picture on HDMI for a default "safe" mode
#hdmi_safe=1

# uncomment this if your display has a black border of unused pixels visible
# and your display can output without overscan
disable_overscan=1

# uncomment the following to adjust overscan. Use positive numbers if console
# goes off screen, and negative if there is too much border
#overscan_left=16
#overscan_right=16
#overscan_top=16
#overscan_bottom=16

# uncomment to force a console size. By default it will be display's size minus
# overscan.
#framebuffer_width=1280
#framebuffer_height=720

# uncomment if hdmi display is not detected and composite is being output
hdmi_force_hotplug=1

# uncomment to force a specific HDMI mode (this will force VGA)
hdmi_group=1
hdmi_mode=58

# uncomment to force a HDMI mode rather than DVI. This can make audio work in
# DMT (computer monitor) modes
#hdmi_drive=2

# uncomment to increase signal to HDMI, if you have interference, blanking, or
# no display
#config_hdmi_boost=4

# uncomment for composite PAL
#sdtv_mode=2

#uncomment to overclock the arm. 700 MHz is the default.
arm_freq=750

# for more options see http://elinux.org/RPi_config.txt
gpu_mem=128
core_freq=250
sdram_freq=400
over_voltage=0

I am using a hdmi to vga adapter.

Can anyone shine any light on my downfall?

Cheers

edit = also running on Raspbian “wheezy”

[Davespice]

You may want to post the make and model of the VGA converter so it could be checked out by others.
To start with though I would try just getting 640x480 to work;

So try this config.txt setting;

Code: Select all

hdmi_safe=1

More info here;
http://elinux.org/RPi_config.txt

[dom]

HDMI to VGA adaptors generally report garbage in their edid. You can check this with
tvservice -m CEA
tvservice -m DMT

to see what resolutions it claims to support.

I'd suggest adding:
hdmi_ignore_edid=0xa5000080

to ignore the edid, and assume everything is supported.

[xencored]

You may want to post the make and model of the VGA converter so it could be checked out by others.
To start with though I would try just getting 640x480 to work;

So try this config.txt setting;

Code: Select all

hdmi_safe=1

More info here;
http://elinux.org/RPi_config.txt

Hello it was this one

http://www.amazon.co.uk/gp/product/B007 ... UTF8&psc=1

I'll try the above cheers.

So try this config.txt setting;

Code: Select all

hdmi_safe=1

Just gives black screen

HDMI to VGA adaptors generally report garbage in their edid. You can check this with
tvservice -m CEA
tvservice -m DMT

to see what resolutions it claims to support.

I'd suggest adding:
hdmi_ignore_edid=0xa5000080

to ignore the edid, and assume everything is supported.

I'll try this now cheers.

[Davespice]

You might want to try the ignore edid and safe mode settings together.

[xencored]

You might want to try the ignore edid and safe mode settings together.

Ignore on its own gives black screen
together gives black screen
safe on its own gives black screen also

[xencored]

HDMI to VGA adaptors generally report garbage in their edid. You can check this with
tvservice -m CEA
tvservice -m DMT

I got this from the commands above

Code: Select all

root@raspberrypi:~# tvservice -m CEA
tvservice-client: No supported modes returned for group CEA in [vc_tv_hdmi_get_supported_modes_new]
Group CEA has 0 modes:
root@raspberrypi:~# tvservice -m DMT
tvservice-client: No supported modes returned for group DMT in [vc_tv_hdmi_get_supported_modes_new]
Group DMT has 0 modes:

[techpaul]

How are you powering the adapter? From Pi or externally ?

I would recommend power externally, as far as I can recall, the Pi cannot supply much HDMI power for a lot of HDMI VGA adapters, especially at higher resolutions.

[xencored]

How are you powering the adapter? From Pi or externally ?

I would recommend power externally, as far as I can recall, the Pi cannot supply much HDMI power for a lot of HDMI VGA adapters, especially at higher resolutions.

I thought about this but It seems to have the power to run the the basic res fine, I had to swap power adapters for the PI tho as it would not start with the 1A one I had running

edit= forgot the main part of the question >.> from the PI it's self.

[xencored]

With safe on gives this

Code: Select all

# tvservice -m CEA
tvservice-client: No supported modes returned for group CEA in [vc_tv_hdmi_get_supported_modes_new]
Group CEA has 0 modes:
root@raspberrypi:~# tvservice -m DMT
Group DMT has 1 modes:
           mode 4: 640x480 @ 60Hz 4:3, clock:25MHz progressive

[techpaul]

You might find this interesting then http://www.amazon.co.uk/product-reviews ... ewpoints=0

Review by someone else on a Pi at 1024 x 768 res

I personally always externally power these types of adapters

[xencored]

You might find this interesting then http://www.amazon.co.uk/product-reviews ... ewpoints=0

Review by someone else on a Pi at 1024 x 768 res

I personally always externally power these types of adapters

Aye I did read that and I am powering from my Main computer

Cheers tho.

[techpaul]

Aye I did read that and I am powering from my Main computer

Cheers tho.

How?

By External Power I mean a separate power unit for the HDMI-VGA Adapter.

[xencored]

The adapter has no power no, the PI is powered via usb lead from main PC

[techpaul]

The adapter has no power no, the PI is powered via usb lead from main PC

Try an external power adapter and the other suggestions on the review I linked before

[xencored]

The adapter has no power no, the PI is powered via usb lead from main PC

Try an external power adapter and the other suggestions on the review I linked before

I don't have an external power adapter for the hdmi to vga adapter. If your talking about the PI it is the same with a normal power lead.

[techpaul]

The adapter has no power no, the PI is powered via usb lead from main PC

Try an external power adapter and the other suggestions on the review I linked before

I don't have an external power adapter for the hdmi to vga adapter. If your talking about the PI is the same with a normal power lead.

Find one for the HDMI adapter and try that.

[xencored]

Find one for the HDMI adapter and try that.

There is no way I can add a power unit to this hdmi adapter.

[xencored]

Ive done it in the end this config worked for me

Code: Select all

# uncomment if you get no picture on HDMI for a default "safe" mode
#hdmi_safe=1
hdmi_ignore_edid=0xa5000080

# uncomment this if your display has a black border of unused pixels visible
# and your display can output without overscan
disable_overscan=0

# uncomment the following to adjust overscan. Use positive numbers if console
# goes off screen, and negative if there is too much border
#overscan_left=16
#overscan_right=16
#overscan_top=16
#overscan_bottom=16

# uncomment to force a console size. By default it will be display's size minus
# overscan.
#framebuffer_width=1280
#framebuffer_height=720

# uncomment if hdmi display is not detected and composite is being output
hdmi_force_hotplug=1

# uncomment to force a specific HDMI mode (this will force VGA)
hdmi_group=2
hdmi_mode=58

# uncomment to force a HDMI mode rather than DVI. This can make audio work in
# DMT (computer monitor) modes
hdmi_drive=2

# uncomment to increase signal to HDMI, if you have interference, blanking, or
# no display
#config_hdmi_boost=4

# uncomment for composite PAL
#sdtv_mode=2

#uncomment to overclock the arm. 700 MHz is the default.
arm_freq=750

# for more options see http://elinux.org/RPi_config.txt
gpu_mem=128
core_freq=250
sdram_freq=400
over_voltage=0

Cheers all

[techpaul]

I don't have an external power adapter for the hdmi to vga adapter. If your talking about the PI is the same with a normal power lead.

Find one for the HDMI adapter and try that.

There is no way I can add a power unit to this hdmi adapter.

If there is now way then it is NOT as advertised as it clearly states that it can be externally powered in all references to it. The small manual should say what type it is.

Also to be CE compliant it MUST state that what power input it requires on the device and in its manual.

[xencored]

If there is now way then it is NOT as advertised as it clearly states that it can be externally powered in all references to it. The small manual should say what type it is.

Also to be CE compliant it MUST state that what power input it requires on the device and in its manual.

Well looking at it there is no way to plug power into it No worries tho as posted above all up and running now.

Cheers