User-Agent: Build Identifier: Mozilla/5.0 (Windows; U; Windows NT 5.0; en-US; rv:1.6) Gecko/20040206 Firefox/0.8 The buttons and throbber of both Firefox and Thunderbird exhibit graphical corruption when repainting on my machine. When starting either app or resizing their windows, the icons for the buttons and throbber have the upper-left corner of the window (that is, an upper-left-corner line and most of the letters "Fil" from the File menu) underlaid underneath their graphics. This is of course more noticeable for buttons with large transparent areas such as greyed-out buttons (like "forward" when you first launch the browser), but it happens on all of them. On mousing over the buttons, the corruption changes: when I mouseover a button, the corruption either completely or mostly vanishes (sometimes all or part of the upper-left-corner lines remain on the button). If I then mouse directly to another active button to the left (say, moving from "Reply All" to "Reply" in Thunderbird), then part of the icon for the button I've just moves to appears underneath the icon for the button I've just moved from. If I instead move to the right, or off the button area completely, or onto a greyed-out button or a spacer, the corruption usually vanishes completely. Sometimes when doing this series of steps several times I note what look like xor-painting problems: for example, that upper-left corner image I keep mentioning is actually made of a light line adjacent to a dark line, and I'll see one of those two lines corrupting the image when my mouse is over it and the other corrupting it when my mouse is not. Other actions causing repaints, like minimizing and restoring or dragging another window over the button area, cause seemingly random graphical corruption as well; dragging a window over the buttons is especially interesting since the corruption seems to depend on exactly what was obscured and newly uncovered when each repaint happened. If I drag quickly enough to get the whole area in one repaint all the buttons have the same image underlying them, generally whatever was in the upper left of the area that got uncovered (again, typically the File menu; sometimes the Back button). If I drag more slowly each successively repainted area has a different image under it. Reproducible: Always Steps to Reproduce: 1. Launch Firefox or Thunderbird, using default theme. 2. Observe buttons/throbber, look for signs of graphical corruption underneath icons. 3. Try mousing over and off of the buttons in different ways to try and reproduce different types of graphical corruption. 4. Try minimizing and restoring, or hiding the window behind another, or some other action that will force a repaint. Actual Results: Various graphical corruption under the icons for the buttons and throbber. Expected Results: Buttons displayed properly after all repaint events. I am using the default theme for Firebird and Thunderbird, and haven't installed any additional themes. When migrating from Mozilla [Seamonkey] I copied most of my Mozilla profile to my Phoenix and Thunderbird profile directories, making sure to edit the absolute paths in the files as necessary. I tried deleting the chrome/ directory in each of the profile directories; this seems to have no effect. This problem reproduces whether the buttons are small or large icons and whether or not they have text under them (the text never exhibits corruption). The problem does not reproduce with Mozilla [Seamonkey] 1.6 on the same machine, using the Modern theme. System configuration: Win2K SP4 NVidia Riva TNT2 Model 64, DirectX 9, DirectX display drivers say they are version 22.214.171.12416 Firefox 0.8 Thunderbird 0.5
This image demonstrates the most common corruption of the icons: showing the upper-left corner of the browser window under each button. You can see the upper-left-corner image (a leftmost and topmost line) and the letters "Fil" underneath all the buttons (some buttons' icons obscure the corruption more than others.)
The corruption doesn't just affect icons on buttons; this attachment shows problems with the folder icons in Thunderbird as well. Harder to see these, but look for example at the right edge of the "Junk" folder icon. This corruption goes away if I click on the "Junk" floder name and returns as soon as I click anywhere else so that selection loses focus or is deselected. Note also the button icon corruption: here, for example, you can see part of the "Reply" button image underneath the "Reply All" button's image.
I'm not sure if there is an existing bug filed for this but for reference this has been reported by several people on the MozillaZine forums. It seems to only affect TNT cards with fairly recent drivers installed. Most people report it disappears if you lower your hardware acceleration slider by one notch or revert to older drivers.
I can verify that changing the TNT2's hardware acceleration from "Full" to one notch less than full ("Disable cursor and bitmap accelerations") fixes the problem, so that's a good workaround. It would be nice to know if this is still going to be considered a "bug" in Mozilla to be worked around/patched to avoid, or if this is INVALID/WONTFIX or something and needs to be filed with NVidia. (Well, it probably needs to be filed with NVidia regardless.)
*** This bug has been marked as a duplicate of 224279 ***
Status: UNCONFIRMED → RESOLVED
Closed: 16 years ago
Resolution: --- → DUPLICATE
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