328676 - FF (Cairo/Win32) do not start on 16 bpp display

Status: VERIFIED FIXED

(Core :: Graphics, defect)

Description

[Volkmar Kostka]

User-Agent:       Mozilla/5.0 (Windows; U; Windows NT 5.0; en-US; rv:1.9a1) Gecko/20060226 Firefox/1.6a1
Build Identifier: Mozilla/5.0 (Windows; U; Windows NT 5.0; en-US; rv:1.9a1) Gecko/20060226 Firefox/1.6a1

FF do not start at all or freezes if switching to 16 bit display.
No option works, neither safemode, nor profilemanager, nor new profile nor clean install. Works fine in 32 bit mode.

Reproducible: Always

Steps to Reproduce:
1. Set 16 bit color mode
2. Start FF

Actual Results:  
FF do not start up. Sits there with 100% load. Profile seems to be read.

Expected Results:  
FF starts normally.

ATI Rage Pro graphic card.
Similar bug: https://bugzilla.mozilla.org/show_bug.cgi?id=318423

Comment 1

[[e-mail]]

Note that 16-bit is the default colour depth for XP remote desktop :-/

Comment 2

[Volkmar Kostka]

Additional info:.
Works with 8 bit on ATI Rage Pro and ATI Radeon Mobility.
Does not work with 16 bit on ATI Radeon Mobility, and (reported: http://forums.mozillazine.org/viewtopic.php?t=386574&start=15 - pikaunforgiven) NVidia.

Comment 3

[Ria Klaassen (not reading all bugmail)]

Dupe of Bug 328432 ?

Comment 4

[Volkmar Kostka]

Comment #3:
Not really a dupe.
Regarding comment #1 <a href="show_bug.cgi?id=328432" title="UNCONFIRMED - Cairo build doesn't display anything used over WinXP remote desktop">Bug 328432</a> seems to be the same problem but this bug reports the cause much better, i think.

Comment 5

[Ben Turner (not reading bugmail, use the needinfo flag!)]

*** Bug 328669 has been marked as a duplicate of this bug. ***

Comment 6

[Ben Turner (not reading bugmail, use the needinfo flag!)]

These assertions from bug 328669 result in this behavior:

###!!! ASSERTION: No DC: 'aDC', file
c:/work/mozilla/builds/ff/trunk/mozilla/gfx/thebes/src/gfxWindowsFonts.cpp,
line 459
cairo_win32_scaled_font_select_font:SelectObject: The handle is invalid.
###!!! ASSERTION: No DC: 'aDC', file
c:/work/mozilla/builds/ff/trunk/mozilla/gfx/thebes/src/gfxWindowsFonts.cpp,
line 555
cairo_win32_scaled_font_select_font:SelectObject: The handle is invalid.

Comment 7

[Bob Clary [:bc] (inactive)]

This prevents testing of trunk builds on the Mozilla QA test farm Windows 2003 Servers since the only access to them is via RDP which is limited to 16bit.

Comment 8

[Stuart Parmenter]

Attachment: ...

Comment 9

[Stuart Parmenter]

*** Bug 328432 has been marked as a duplicate of this bug. ***

Comment 10

[Bob Clary [:bc] (inactive)]

verified on opt/dbg cvs builds on winxp when switching depth to 16bit. Thanks!