[ kvm-Bugs-2907597 ] qemu vnc server clips at 2560x1600

[ kvm-Bugs-2907597 ] qemu vnc server clips at 2560x1600

[SourceForge.net]

Bugs item #2907597, was opened at 2009-12-02 16:57
Message generated for change (Tracker Item Submitted) made by mcsoccer
You can respond by visiting: 
https://sourceforge.net/tracker/?func=detail&atid=893831&aid=2907597&group_id=180599

Please note that this message will contain a full copy of the comment thread,
including the initial issue submission, for this request,
not just the latest update.
Category: qemu
Group: None
Status: Open
Resolution: None
Priority: 5
Private: No
Submitted By: Matthew Colyer (mcsoccer)
Assigned to: Nobody/Anonymous (nobody)
Summary: qemu vnc server clips at 2560x1600

Initial Comment:
So I am running using the VESA driver to run an Ubuntu 9.10 guest at 2560x1600 (I had to modify the xserver-video-vesa package to remove an internal screen limit of 2048x2048 in the xorg vesa driver) and everything works great except that the qemu vnc server appears to clip at this resolution. The problem goes away if I run 1900x1200 and it doesn't change if I run 16bit depth or 24bit depth.

I have attached two screenshots, the first is vncing directly into qemu (which exhibits the problem) and the second is vncing to a vnc server I have running in the guest which doesn't have the problem.

I poked around in vnc.c and couldn't see any limits but I feel like its a buffer limit of some kind.

Also if you look very closely at the first image you can see that the first row is drawn correctly all the way across but subsequent rows are not.

If you need more information doesn't hesitate to ask.

----------------------------------------------------------------------

You can respond by visiting: 
https://sourceforge.net/tracker/?func=detail&atid=893831&aid=2907597&group_id=180599

[ kvm-Bugs-2907597 ] qemu vnc server clips at 2560x1600

[SourceForge.net]

Bugs item #2907597, was opened at 2009-12-02 18:57
Message generated for change (Comment added) made by avik
You can respond by visiting: 
https://sourceforge.net/tracker/?func=detail&atid=893831&aid=2907597&group_id=180599

Please note that this message will contain a full copy of the comment thread,
including the initial issue submission, for this request,
not just the latest update.
Category: qemu
Group: None
>Status: Pending
Resolution: None
Priority: 5
Private: No
Submitted By: Matthew Colyer (mcsoccer)
Assigned to: Nobody/Anonymous (nobody)
Summary: qemu vnc server clips at 2560x1600

Initial Comment:
So I am running using the VESA driver to run an Ubuntu 9.10 guest at 2560x1600 (I had to modify the xserver-video-vesa package to remove an internal screen limit of 2048x2048 in the xorg vesa driver) and everything works great except that the qemu vnc server appears to clip at this resolution. The problem goes away if I run 1900x1200 and it doesn't change if I run 16bit depth or 24bit depth.

I have attached two screenshots, the first is vncing directly into qemu (which exhibits the problem) and the second is vncing to a vnc server I have running in the guest which doesn't have the problem.

I poked around in vnc.c and couldn't see any limits but I feel like its a buffer limit of some kind.

Also if you look very closely at the first image you can see that the first row is drawn correctly all the way across but subsequent rows are not.

If you need more information doesn't hesitate to ask.

----------------------------------------------------------------------

>Comment By: Avi Kivity (avik)
Date: 2009-12-13 12:29

Message:
Does it work well with SDL?  Maybe the problem is not vnc related.

----------------------------------------------------------------------

You can respond by visiting: 
https://sourceforge.net/tracker/?func=detail&atid=893831&aid=2907597&group_id=180599

[ kvm-Bugs-2907597 ] qemu vnc server clips at 2560x1600

[SourceForge.net]

Bugs item #2907597, was opened at 2009-12-02 16:57
Message generated for change (Comment added) made by mcsoccer
You can respond by visiting: 
https://sourceforge.net/tracker/?func=detail&atid=893831&aid=2907597&group_id=180599

Please note that this message will contain a full copy of the comment thread,
including the initial issue submission, for this request,
not just the latest update.
Category: qemu
Group: None
Status: Pending
Resolution: None
Priority: 5
Private: No
Submitted By: Matthew Colyer (mcsoccer)
Assigned to: Nobody/Anonymous (nobody)
Summary: qemu vnc server clips at 2560x1600

Initial Comment:
So I am running using the VESA driver to run an Ubuntu 9.10 guest at 2560x1600 (I had to modify the xserver-video-vesa package to remove an internal screen limit of 2048x2048 in the xorg vesa driver) and everything works great except that the qemu vnc server appears to clip at this resolution. The problem goes away if I run 1900x1200 and it doesn't change if I run 16bit depth or 24bit depth.

I have attached two screenshots, the first is vncing directly into qemu (which exhibits the problem) and the second is vncing to a vnc server I have running in the guest which doesn't have the problem.

I poked around in vnc.c and couldn't see any limits but I feel like its a buffer limit of some kind.

Also if you look very closely at the first image you can see that the first row is drawn correctly all the way across but subsequent rows are not.

If you need more information doesn't hesitate to ask.

----------------------------------------------------------------------

Comment By: Matthew Colyer (mcsoccer)
Date: 2009-12-17 03:18

Message:
The blocks do not show up when run in SDL mode. So I believe the problem is
still somehow related to the VNC server.

----------------------------------------------------------------------

Comment By: Avi Kivity (avik)
Date: 2009-12-13 10:29

Message:
Does it work well with SDL?  Maybe the problem is not vnc related.

----------------------------------------------------------------------

You can respond by visiting: 
https://sourceforge.net/tracker/?func=detail&atid=893831&aid=2907597&group_id=180599

[ kvm-Bugs-2907597 ] qemu vnc server clips at 2560x1600

[SourceForge.net]

Bugs item #2907597, was opened at 2009-12-02 16:57
Message generated for change (Comment added) made by sf-robot
You can respond by visiting: 
https://sourceforge.net/tracker/?func=detail&atid=893831&aid=2907597&group_id=180599

Please note that this message will contain a full copy of the comment thread,
including the initial issue submission, for this request,
not just the latest update.
Category: qemu
Group: None
>Status: Closed
Resolution: None
Priority: 5
Private: No
Submitted By: Matthew Colyer (mcsoccer)
Assigned to: Nobody/Anonymous (nobody)
Summary: qemu vnc server clips at 2560x1600

Initial Comment:
So I am running using the VESA driver to run an Ubuntu 9.10 guest at 2560x1600 (I had to modify the xserver-video-vesa package to remove an internal screen limit of 2048x2048 in the xorg vesa driver) and everything works great except that the qemu vnc server appears to clip at this resolution. The problem goes away if I run 1900x1200 and it doesn't change if I run 16bit depth or 24bit depth.

I have attached two screenshots, the first is vncing directly into qemu (which exhibits the problem) and the second is vncing to a vnc server I have running in the guest which doesn't have the problem.

I poked around in vnc.c and couldn't see any limits but I feel like its a buffer limit of some kind.

Also if you look very closely at the first image you can see that the first row is drawn correctly all the way across but subsequent rows are not.

If you need more information doesn't hesitate to ask.

----------------------------------------------------------------------

>Comment By: SourceForge Robot (sf-robot)
Date: 2009-12-28 02:20

Message:
This Tracker item was closed automatically by the system. It was
previously set to a Pending status, and the original submitter
did not respond within 14 days (the time period specified by
the administrator of this Tracker).

----------------------------------------------------------------------

Comment By: Matthew Colyer (mcsoccer)
Date: 2009-12-17 03:18

Message:
The blocks do not show up when run in SDL mode. So I believe the problem is
still somehow related to the VNC server.

----------------------------------------------------------------------

Comment By: Avi Kivity (avik)
Date: 2009-12-13 10:29

Message:
Does it work well with SDL?  Maybe the problem is not vnc related.

----------------------------------------------------------------------

You can respond by visiting: 
https://sourceforge.net/tracker/?func=detail&atid=893831&aid=2907597&group_id=180599

[ kvm-Bugs-2907597 ] qemu vnc server clips at 2560x1600

[SourceForge.net]

Bugs item #2907597, was opened at 2009-12-02 18:57
Message generated for change (Settings changed) made by avik
You can respond by visiting: 
https://sourceforge.net/tracker/?func=detail&atid=893831&aid=2907597&group_id=180599

Please note that this message will contain a full copy of the comment thread,
including the initial issue submission, for this request,
not just the latest update.
Category: qemu
Group: None
>Status: Open
Resolution: None
Priority: 5
Private: No
Submitted By: Matthew Colyer (mcsoccer)
Assigned to: Nobody/Anonymous (nobody)
Summary: qemu vnc server clips at 2560x1600

Initial Comment:
So I am running using the VESA driver to run an Ubuntu 9.10 guest at 2560x1600 (I had to modify the xserver-video-vesa package to remove an internal screen limit of 2048x2048 in the xorg vesa driver) and everything works great except that the qemu vnc server appears to clip at this resolution. The problem goes away if I run 1900x1200 and it doesn't change if I run 16bit depth or 24bit depth.

I have attached two screenshots, the first is vncing directly into qemu (which exhibits the problem) and the second is vncing to a vnc server I have running in the guest which doesn't have the problem.

I poked around in vnc.c and couldn't see any limits but I feel like its a buffer limit of some kind.

Also if you look very closely at the first image you can see that the first row is drawn correctly all the way across but subsequent rows are not.

If you need more information doesn't hesitate to ask.

----------------------------------------------------------------------

Comment By: SourceForge Robot (sf-robot)
Date: 2009-12-28 04:20

Message:
This Tracker item was closed automatically by the system. It was
previously set to a Pending status, and the original submitter
did not respond within 14 days (the time period specified by
the administrator of this Tracker).

----------------------------------------------------------------------

Comment By: Matthew Colyer (mcsoccer)
Date: 2009-12-17 05:18

Message:
The blocks do not show up when run in SDL mode. So I believe the problem is
still somehow related to the VNC server.

----------------------------------------------------------------------

Comment By: Avi Kivity (avik)
Date: 2009-12-13 12:29

Message:
Does it work well with SDL?  Maybe the problem is not vnc related.

----------------------------------------------------------------------

You can respond by visiting: 
https://sourceforge.net/tracker/?func=detail&atid=893831&aid=2907597&group_id=180599

[ kvm-Bugs-2907597 ] qemu vnc server clips at 2560x1600

[SourceForge.net]

Bugs item #2907597, was opened at 2009-12-02 18:57
Message generated for change (Comment added) made by avik
You can respond by visiting: 
https://sourceforge.net/tracker/?func=detail&atid=893831&aid=2907597&group_id=180599

Please note that this message will contain a full copy of the comment thread,
including the initial issue submission, for this request,
not just the latest update.
Category: qemu
Group: None
Status: Open
Resolution: None
Priority: 5
Private: No
Submitted By: Matthew Colyer (mcsoccer)
Assigned to: Nobody/Anonymous (nobody)
Summary: qemu vnc server clips at 2560x1600

Initial Comment:
So I am running using the VESA driver to run an Ubuntu 9.10 guest at 2560x1600 (I had to modify the xserver-video-vesa package to remove an internal screen limit of 2048x2048 in the xorg vesa driver) and everything works great except that the qemu vnc server appears to clip at this resolution. The problem goes away if I run 1900x1200 and it doesn't change if I run 16bit depth or 24bit depth.

I have attached two screenshots, the first is vncing directly into qemu (which exhibits the problem) and the second is vncing to a vnc server I have running in the guest which doesn't have the problem.

I poked around in vnc.c and couldn't see any limits but I feel like its a buffer limit of some kind.

Also if you look very closely at the first image you can see that the first row is drawn correctly all the way across but subsequent rows are not.

If you need more information doesn't hesitate to ask.

----------------------------------------------------------------------

>Comment By: Avi Kivity (avik)
Date: 2010-01-10 16:17

Message:
The cropping is 512 pixels wide, the correct area is 2048 pixels wide, so
it does look like some kind of limit.

----------------------------------------------------------------------

Comment By: SourceForge Robot (sf-robot)
Date: 2009-12-28 04:20

Message:
This Tracker item was closed automatically by the system. It was
previously set to a Pending status, and the original submitter
did not respond within 14 days (the time period specified by
the administrator of this Tracker).

----------------------------------------------------------------------

Comment By: Matthew Colyer (mcsoccer)
Date: 2009-12-17 05:18

Message:
The blocks do not show up when run in SDL mode. So I believe the problem is
still somehow related to the VNC server.

----------------------------------------------------------------------

Comment By: Avi Kivity (avik)
Date: 2009-12-13 12:29

Message:
Does it work well with SDL?  Maybe the problem is not vnc related.

----------------------------------------------------------------------

You can respond by visiting: 
https://sourceforge.net/tracker/?func=detail&atid=893831&aid=2907597&group_id=180599

[ kvm-Bugs-2907597 ] qemu vnc server clips at 2560x1600

[SourceForge.net]

Bugs item #2907597, was opened at 2009-12-02 18:57
Message generated for change (Comment added) made by avik
You can respond by visiting: 
https://sourceforge.net/tracker/?func=detail&atid=893831&aid=2907597&group_id=180599

Please note that this message will contain a full copy of the comment thread,
including the initial issue submission, for this request,
not just the latest update.
Category: qemu
Group: None
Status: Open
Resolution: None
Priority: 5
Private: No
Submitted By: Matthew Colyer (mcsoccer)
Assigned to: Nobody/Anonymous (nobody)
Summary: qemu vnc server clips at 2560x1600

Initial Comment:
So I am running using the VESA driver to run an Ubuntu 9.10 guest at 2560x1600 (I had to modify the xserver-video-vesa package to remove an internal screen limit of 2048x2048 in the xorg vesa driver) and everything works great except that the qemu vnc server appears to clip at this resolution. The problem goes away if I run 1900x1200 and it doesn't change if I run 16bit depth or 24bit depth.

I have attached two screenshots, the first is vncing directly into qemu (which exhibits the problem) and the second is vncing to a vnc server I have running in the guest which doesn't have the problem.

I poked around in vnc.c and couldn't see any limits but I feel like its a buffer limit of some kind.

Also if you look very closely at the first image you can see that the first row is drawn correctly all the way across but subsequent rows are not.

If you need more information doesn't hesitate to ask.

----------------------------------------------------------------------

>Comment By: Avi Kivity (avik)
Date: 2010-01-10 18:26

Message:
Confirmed with vncviewer and vinagre, so unlikely to be a client problem.

----------------------------------------------------------------------

Comment By: Avi Kivity (avik)
Date: 2010-01-10 16:17

Message:
The cropping is 512 pixels wide, the correct area is 2048 pixels wide, so
it does look like some kind of limit.

----------------------------------------------------------------------

Comment By: SourceForge Robot (sf-robot)
Date: 2009-12-28 04:20

Message:
This Tracker item was closed automatically by the system. It was
previously set to a Pending status, and the original submitter
did not respond within 14 days (the time period specified by
the administrator of this Tracker).

----------------------------------------------------------------------

Comment By: Matthew Colyer (mcsoccer)
Date: 2009-12-17 05:18

Message:
The blocks do not show up when run in SDL mode. So I believe the problem is
still somehow related to the VNC server.

----------------------------------------------------------------------

Comment By: Avi Kivity (avik)
Date: 2009-12-13 12:29

Message:
Does it work well with SDL?  Maybe the problem is not vnc related.

----------------------------------------------------------------------

You can respond by visiting: 
https://sourceforge.net/tracker/?func=detail&atid=893831&aid=2907597&group_id=180599

Re: [ kvm-Bugs-2907597 ] qemu vnc server clips at 2560x1600

[Avi Kivity]

On 01/10/2010 06:26 PM, SourceForge.net wrote:
> Initial Comment:
> So I am running using the VESA driver to run an Ubuntu 9.10 guest at 2560x1600 (I had to modify the xserver-video-vesa package to remove an internal screen limit of 2048x2048 in the xorg vesa driver) and everything works great except that the qemu vnc server appears to clip at this resolution. The problem goes away if I run 1900x1200 and it doesn't change if I run 16bit depth or 24bit depth.
>
> I have attached two screenshots, the first is vncing directly into qemu (which exhibits the problem) and the second is vncing to a vnc server I have running in the guest which doesn't have the problem.
>
> I poked around in vnc.c and couldn't see any limits but I feel like its a buffer limit of some kind.
>
> Also if you look very closely at the first image you can see that the first row is drawn correctly all the way across but subsequent rows are not.
>
> If you need more information doesn't hesitate to ask.
>
>    

Anthony, can you take a look at this?  Seems like a serious issue, could 
find nothing obvious in vnc.c.

> ----------------------------------------------------------------------
>
>    
>> Comment By: Avi Kivity (avik)
>>      
> Date: 2010-01-10 18:26
>
> Message:
> Confirmed with vncviewer and vinagre, so unlikely to be a client problem.
>
> ----------------------------------------------------------------------
>
> Comment By: Avi Kivity (avik)
> Date: 2010-01-10 16:17
>
> Message:
> The cropping is 512 pixels wide, the correct area is 2048 pixels wide, so
> it does look like some kind of limit.
>
> ----------------------------------------------------------------------
>
> Comment By: SourceForge Robot (sf-robot)
> Date: 2009-12-28 04:20
>
> Message:
> This Tracker item was closed automatically by the system. It was
> previously set to a Pending status, and the original submitter
> did not respond within 14 days (the time period specified by
> the administrator of this Tracker).
>
> ----------------------------------------------------------------------
>
> Comment By: Matthew Colyer (mcsoccer)
> Date: 2009-12-17 05:18
>
> Message:
> The blocks do not show up when run in SDL mode. So I believe the problem is
> still somehow related to the VNC server.
>
> ----------------------------------------------------------------------
>
> Comment By: Avi Kivity (avik)
> Date: 2009-12-13 12:29
>
> Message:
> Does it work well with SDL?  Maybe the problem is not vnc related.
>
> ----------------------------------------------------------------------
>
> You can respond by visiting:
> https://sourceforge.net/tracker/?func=detail&atid=893831&aid=2907597&group_id=180599
> --
> To unsubscribe from this list: send the line "unsubscribe kvm" in
> the body of a message to majordomo@vger.kernel.org
> More majordomo info at  http://vger.kernel.org/majordomo-info.html
>    


-- 
error compiling committee.c: too many arguments to function

[ kvm-Bugs-2907597 ] qemu vnc server clips at 2560x1600

[SourceForge.net]

Bugs item #2907597, was opened at 2009-12-02 18:57
Message generated for change (Settings changed) made by avik
You can respond by visiting: 
https://sourceforge.net/tracker/?func=detail&atid=893831&aid=2907597&group_id=180599

Please note that this message will contain a full copy of the comment thread,
including the initial issue submission, for this request,
not just the latest update.
Category: qemu
Group: None
>Status: Pending
Resolution: None
Priority: 5
Private: No
Submitted By: Matthew Colyer (mcsoccer)
Assigned to: Nobody/Anonymous (nobody)
Summary: qemu vnc server clips at 2560x1600

Initial Comment:
So I am running using the VESA driver to run an Ubuntu 9.10 guest at 2560x1600 (I had to modify the xserver-video-vesa package to remove an internal screen limit of 2048x2048 in the xorg vesa driver) and everything works great except that the qemu vnc server appears to clip at this resolution. The problem goes away if I run 1900x1200 and it doesn't change if I run 16bit depth or 24bit depth.

I have attached two screenshots, the first is vncing directly into qemu (which exhibits the problem) and the second is vncing to a vnc server I have running in the guest which doesn't have the problem.

I poked around in vnc.c and couldn't see any limits but I feel like its a buffer limit of some kind.

Also if you look very closely at the first image you can see that the first row is drawn correctly all the way across but subsequent rows are not.

If you need more information doesn't hesitate to ask.

----------------------------------------------------------------------

>Comment By: Avi Kivity (avik)
Date: 2010-01-11 12:19

Message:
Can you try changing VNC_MAX_WIDTH in vnc.h?

----------------------------------------------------------------------

Comment By: Avi Kivity (avik)
Date: 2010-01-10 18:26

Message:
Confirmed with vncviewer and vinagre, so unlikely to be a client problem.

----------------------------------------------------------------------

Comment By: Avi Kivity (avik)
Date: 2010-01-10 16:17

Message:
The cropping is 512 pixels wide, the correct area is 2048 pixels wide, so
it does look like some kind of limit.

----------------------------------------------------------------------

Comment By: SourceForge Robot (sf-robot)
Date: 2009-12-28 04:20

Message:
This Tracker item was closed automatically by the system. It was
previously set to a Pending status, and the original submitter
did not respond within 14 days (the time period specified by
the administrator of this Tracker).

----------------------------------------------------------------------

Comment By: Matthew Colyer (mcsoccer)
Date: 2009-12-17 05:18

Message:
The blocks do not show up when run in SDL mode. So I believe the problem is
still somehow related to the VNC server.

----------------------------------------------------------------------

Comment By: Avi Kivity (avik)
Date: 2009-12-13 12:29

Message:
Does it work well with SDL?  Maybe the problem is not vnc related.

----------------------------------------------------------------------

You can respond by visiting: 
https://sourceforge.net/tracker/?func=detail&atid=893831&aid=2907597&group_id=180599

Re: [ kvm-Bugs-2907597 ] qemu vnc server clips at 2560x1600

[Anthony Liguori]

On 01/10/2010 10:30 AM, Avi Kivity wrote:
> On 01/10/2010 06:26 PM, SourceForge.net wrote:
>> Initial Comment:
>> So I am running using the VESA driver to run an Ubuntu 9.10 guest at 
>> 2560x1600 (I had to modify the xserver-video-vesa package to remove 
>> an internal screen limit of 2048x2048 in the xorg vesa driver) and 
>> everything works great except that the qemu vnc server appears to 
>> clip at this resolution. The problem goes away if I run 1900x1200 and 
>> it doesn't change if I run 16bit depth or 24bit depth.
>>
>> I have attached two screenshots, the first is vncing directly into 
>> qemu (which exhibits the problem) and the second is vncing to a vnc 
>> server I have running in the guest which doesn't have the problem.
>>
>> I poked around in vnc.c and couldn't see any limits but I feel like 
>> its a buffer limit of some kind.
>>
>> Also if you look very closely at the first image you can see that the 
>> first row is drawn correctly all the way across but subsequent rows 
>> are not.
>>
>> If you need more information doesn't hesitate to ask.
>>
>
> Anthony, can you take a look at this?  Seems like a serious issue, 
> could find nothing obvious in vnc.c.

VNC_MAX_WIDTH and VNC_MAX_HEIGHT in vnc.h are currently defined to 
2048.  We do dirty tracking with a bitmap and that bitmap is currently a 
fixed size.

2048 is bigger than any physical screen that I know of so I assume this 
is a multiple monitor scenario.  Long term, I think exposing multiple 
monitors to the guest is a better approach for this kind of functionality.

Since these resolutions for a single screen don't really exist, this is 
largely an untested path within the guest.

Regards,

Anthony Liguori

Re: [ kvm-Bugs-2907597 ] qemu vnc server clips at 2560x1600

[Avi Kivity]

On 01/11/2010 03:53 PM, Anthony Liguori wrote:
>> Anthony, can you take a look at this?  Seems like a serious issue, 
>> could find nothing obvious in vnc.c.
>
>
> VNC_MAX_WIDTH and VNC_MAX_HEIGHT in vnc.h are currently defined to 
> 2048.  We do dirty tracking with a bitmap and that bitmap is currently 
> a fixed size.
>
> 2048 is bigger than any physical screen that I know of so I assume 
> this is a multiple monitor scenario.  Long term, I think exposing 
> multiple monitors to the guest is a better approach for this kind of 
> functionality.
>
> Since these resolutions for a single screen don't really exist, this 
> is largely an untested path within the guest.

Google suggests such screens do exist, and -vga std (at least in 
qemu-kvm) supports them.

I've asked the reporter to play with VNC_MAX_WIDTH.

-- 
error compiling committee.c: too many arguments to function

[ kvm-Bugs-2907597 ] qemu vnc server clips at 2560x1600

[SourceForge.net]

Bugs item #2907597, was opened at 2009-12-02 16:57
Message generated for change (Settings changed) made by mcsoccer
You can respond by visiting: 
https://sourceforge.net/tracker/?func=detail&atid=893831&aid=2907597&group_id=180599

Please note that this message will contain a full copy of the comment thread,
including the initial issue submission, for this request,
not just the latest update.
Category: qemu
Group: None
>Status: Open
Resolution: None
Priority: 5
Private: No
Submitted By: Matthew Colyer (mcsoccer)
Assigned to: Nobody/Anonymous (nobody)
Summary: qemu vnc server clips at 2560x1600

Initial Comment:
So I am running using the VESA driver to run an Ubuntu 9.10 guest at 2560x1600 (I had to modify the xserver-video-vesa package to remove an internal screen limit of 2048x2048 in the xorg vesa driver) and everything works great except that the qemu vnc server appears to clip at this resolution. The problem goes away if I run 1900x1200 and it doesn't change if I run 16bit depth or 24bit depth.

I have attached two screenshots, the first is vncing directly into qemu (which exhibits the problem) and the second is vncing to a vnc server I have running in the guest which doesn't have the problem.

I poked around in vnc.c and couldn't see any limits but I feel like its a buffer limit of some kind.

Also if you look very closely at the first image you can see that the first row is drawn correctly all the way across but subsequent rows are not.

If you need more information doesn't hesitate to ask.

----------------------------------------------------------------------

>Comment By: Matthew Colyer (mcsoccer)
Date: 2010-01-11 16:17

Message:
Changing VNC_MAX_WIDTH to 2560 works. Thanks for figuring that out, would
you be able to commit that change?

----------------------------------------------------------------------

Comment By: Avi Kivity (avik)
Date: 2010-01-11 10:19

Message:
Can you try changing VNC_MAX_WIDTH in vnc.h?

----------------------------------------------------------------------

Comment By: Avi Kivity (avik)
Date: 2010-01-10 16:26

Message:
Confirmed with vncviewer and vinagre, so unlikely to be a client problem.

----------------------------------------------------------------------

Comment By: Avi Kivity (avik)
Date: 2010-01-10 14:17

Message:
The cropping is 512 pixels wide, the correct area is 2048 pixels wide, so
it does look like some kind of limit.

----------------------------------------------------------------------

Comment By: SourceForge Robot (sf-robot)
Date: 2009-12-28 02:20

Message:
This Tracker item was closed automatically by the system. It was
previously set to a Pending status, and the original submitter
did not respond within 14 days (the time period specified by
the administrator of this Tracker).

----------------------------------------------------------------------

Comment By: Matthew Colyer (mcsoccer)
Date: 2009-12-17 03:18

Message:
The blocks do not show up when run in SDL mode. So I believe the problem is
still somehow related to the VNC server.

----------------------------------------------------------------------

Comment By: Avi Kivity (avik)
Date: 2009-12-13 10:29

Message:
Does it work well with SDL?  Maybe the problem is not vnc related.

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You can respond by visiting: 
https://sourceforge.net/tracker/?func=detail&atid=893831&aid=2907597&group_id=180599

Re: [ kvm-Bugs-2907597 ] qemu vnc server clips at 2560x1600

[Avi Kivity]

On 01/11/2010 04:30 PM, Avi Kivity wrote:
>>
>> VNC_MAX_WIDTH and VNC_MAX_HEIGHT in vnc.h are currently defined to 
>> 2048.  We do dirty tracking with a bitmap and that bitmap is 
>> currently a fixed size.
>>
>> 2048 is bigger than any physical screen that I know of so I assume 
>> this is a multiple monitor scenario.  Long term, I think exposing 
>> multiple monitors to the guest is a better approach for this kind of 
>> functionality.
>>
>> Since these resolutions for a single screen don't really exist, this 
>> is largely an untested path within the guest.
>
>
> Google suggests such screens do exist, and -vga std (at least in 
> qemu-kvm) supports them.
>
> I've asked the reporter to play with VNC_MAX_WIDTH.
>

The reporter confirms that increasing V_M_W fixes the problem.

-- 
error compiling committee.c: too many arguments to function

[ kvm-Bugs-2907597 ] qemu vnc server clips at 2560x1600

[SourceForge.net]

Bugs item #2907597, was opened at 2009-12-02 10:57
Message generated for change (Comment added) made by iggy_cav
You can respond by visiting: 
https://sourceforge.net/tracker/?func=detail&atid=893831&aid=2907597&group_id=180599

Please note that this message will contain a full copy of the comment thread,
including the initial issue submission, for this request,
not just the latest update.
Category: qemu
Group: None
>Status: Closed
>Resolution: Fixed
Priority: 5
Private: No
Submitted By: Matthew Colyer (mcsoccer)
Assigned to: Nobody/Anonymous (nobody)
Summary: qemu vnc server clips at 2560x1600

Initial Comment:
So I am running using the VESA driver to run an Ubuntu 9.10 guest at 2560x1600 (I had to modify the xserver-video-vesa package to remove an internal screen limit of 2048x2048 in the xorg vesa driver) and everything works great except that the qemu vnc server appears to clip at this resolution. The problem goes away if I run 1900x1200 and it doesn't change if I run 16bit depth or 24bit depth.

I have attached two screenshots, the first is vncing directly into qemu (which exhibits the problem) and the second is vncing to a vnc server I have running in the guest which doesn't have the problem.

I poked around in vnc.c and couldn't see any limits but I feel like its a buffer limit of some kind.

Also if you look very closely at the first image you can see that the first row is drawn correctly all the way across but subsequent rows are not.

If you need more information doesn't hesitate to ask.

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>Comment By: Brian Jackson (iggy_cav)
Date: 2010-02-10 15:54

Message:
This change has been applied to qemu upstream, so it will therefore be in
the next qemu-kvm release. Enjoy!

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Comment By: Matthew Colyer (mcsoccer)
Date: 2010-01-11 10:17

Message:
Changing VNC_MAX_WIDTH to 2560 works. Thanks for figuring that out, would
you be able to commit that change?

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Comment By: Avi Kivity (avik)
Date: 2010-01-11 04:19

Message:
Can you try changing VNC_MAX_WIDTH in vnc.h?

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Comment By: Avi Kivity (avik)
Date: 2010-01-10 10:26

Message:
Confirmed with vncviewer and vinagre, so unlikely to be a client problem.

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Comment By: Avi Kivity (avik)
Date: 2010-01-10 08:17

Message:
The cropping is 512 pixels wide, the correct area is 2048 pixels wide, so
it does look like some kind of limit.

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Comment By: SourceForge Robot (sf-robot)
Date: 2009-12-27 20:20

Message:
This Tracker item was closed automatically by the system. It was
previously set to a Pending status, and the original submitter
did not respond within 14 days (the time period specified by
the administrator of this Tracker).

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Comment By: Matthew Colyer (mcsoccer)
Date: 2009-12-16 21:18

Message:
The blocks do not show up when run in SDL mode. So I believe the problem is
still somehow related to the VNC server.

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Comment By: Avi Kivity (avik)
Date: 2009-12-13 04:29

Message:
Does it work well with SDL?  Maybe the problem is not vnc related.

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You can respond by visiting: 
https://sourceforge.net/tracker/?func=detail&atid=893831&aid=2907597&group_id=180599