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> Either way, even if this is not a bug in Firefox, but instead graphics card (Hardware accel only existed in trunk builds way > Therefore it is not possible for this issue to occur on 3.5 final, so your > This bug only occurs with hardware acceleration enabled (see comment 0). I don't have access to the machine/6200 card in question until after the holidays, but will confirm resolved/work out a date range when I get back.
Nv44a geforce 6200 driver code#
However, the recent D3D code changes (as of the last couple of weeks) seem to have turned off D3D9 acceleration for the card anyway (ie: now shows "0/1 windows accelerated" at the bottom of about:support, even when "enable hardware accel where possible" is ticked in prefs), which may possibly have mitigated the problem. (Hardware accel only existed in trunk builds way after 3.5/3.6).Įither way, even if this is not a bug in Firefox, but instead graphics card incompatibility (the 6200 is ancient after all), all the user will care about is that Firefox used to work fine and now it doesn't - so the 6200 would need to be blacklisted. Therefore it is not possible for this issue to occur on 3.5 final, so your issue is something different. This bug only occurs with hardware acceleration enabled (see comment 0). > I remember i had the same effect on my old computer using 3.5 Final. Please let me know if there is any more information that I can provide, or if there is anything I can do to help narrow down the cause. When the glitches occur, if the page is scrolled more, such that the visually corrupted areas go off-screen, they don't usually return when the page is scrolled back again.Īlternatively when the glitches are shown, if the Minefield window is resized (eg: toggle fullscreen on and off using F11, or else manually change the window size), they disappear and the page renders fine until the next occurrence.Īdapter Description: NVIDIA GeForce 6200 TurboCache(TM)Īlso, if it helps at all, here is my Grafx Bot's test results: Scrolling occurs without graphical glitches, ie: the same visually as if hardware acceleration was turned off. Graphical glitches (alternating black and white horizontal bars / stripes) appear in the page area. Watch page content for graphical glitches. (The former seems to cause the problem more frequently).Ĥ. Scroll the page repeatedly using either standard mouse wheel scroll, or middle click mouse wheel and autoscroll. Navigate to a page that is fairly long and would need lots of scrolling using the mouse wheel, eg: (but works on many other pages too)ģ. Open latest nightly with hardware acceleration enabled in prefs.Ģ. The issue only occurs when "use hardware acceleration" is enabled in prefs and occurs even on pages without plugins.ġ. When scrolling pages using both normal mouse scroll and also middle mouse click autoscroll, approx 20% of pages generate graphical glitches (alternating black and white horizontal bars / stripes) in the page area.