838382 - Rendering issue with display mirror drivers (Windows XP)

Status: RESOLVED WORKSFORME

(Firefox :: Untriaged, defect)

Description

[jd]

User Agent: Mozilla/5.0 (Windows NT 5.1; rv:18.0) Gecko/20100101 Firefox/18.0
Build ID: 20130201065344

Steps to reproduce:

I got a new Samsung monitor that establishes a wireless connection with the PC using a display mirror driver. (It looks like the issue can be replicated with any mirror driver, not only the one provided by Samsung. For example, I was able to replicate the issue using the DFMirage driver in combination with TightVNC.)


Actual results:

Although the desktop and other application windows are rendered OK on the mirrored display, major parts of the Firefox window fail to render correctly.


Expected results:

The Firefox window should have appeared on the mirrored display just as it appears on the main laptop display.

Comment 1

[Matthias Versen [:Matti]]

Disable the hardware acceleration in tools/options/advanced/general /ff restart required) and try it again.

Comment 2

[jd]

(In reply to Matthias Versen [:Matti] from comment #1)
> Disable the hardware acceleration in tools/options/advanced/general /ff
> restart required) and try it again.

Thank you very much! This does the trick. Sorry, I didn't know that such an option exists.

Comment 3

[Matthias Versen [:Matti]]

The issue itself is very likely a bug in the driver but could you please post the graphic section from about:support (enter it in the Firefox address bar) here ?

Comment 4

[jd]

(In reply to Matthias Versen [:Matti] from comment #3)
> The issue itself is very likely a bug in the driver but could you please
> post the graphic section from about:support (enter it in the Firefox address
> bar) here ?

Sure, here it is (with hardware acceleration disabled):

Adapter Description          ATI Mobility Radeon HD 3650
Adapter Driver               sati2dvag
Adapter RAM                  Unknown
Device ID                    0x9591
Direct2D Enabled             no information
DirectWrite Enabled          false (0.0.0.0)
Driver Date                  8-25-2010
Driver Version               8.771.0.0
GPU #2 Active                false
GPU Accelerated Windows      0/1 Basic no information
Vendor ID                    0x1002
WebGL Renderer               Google Inc. -- ANGLE (ATI Mobility Radeon HD 3650)
AzureCanvasBackend           cairo
AzureContentBackend          none
AzureFallbackCanvasBackend   none