User Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:32.0) Gecko/20100101 Firefox/32.0 Build ID: 20140825202822 Steps to reproduce: Just start Thunderbird after the the update. Thunderbird "triubleshooting" report below: Application Basics Name: Thunderbird Version: 31.1.0 User Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:31.0) Gecko/20100101 Thunderbird/31.1.0 Profile Folder: Show Folder (Local drive) Application Build ID: 20140828165811 Enabled Plugins: about:plugins Build Configuration: about:buildconfig Memory Use: about:memory Mail and News Accounts account1: INCOMING: account1, , (none) Local Folders, plain, passwordCleartext account2: INCOMING: account2, , (pop3) mail.internode.on.net:110, plain, passwordCleartext OUTGOING: mail.internode.on.net:25, plain, passwordCleartext, true Crash Reports http://crash-stats.mozilla.com/report/index/bp-46e9ede8-eb6f-4ff2-92e6-014b42120322 (22/03/2012) Extensions British English Dictionary, 1.19.1, true, en-GB@dictionaries.addons.mozilla.org CompactHeader, 2.0.8, true, {58D4392A-842E-11DE-B51A-C7B855D89593} Extra Folder Columns, 1.1.5, true, extra-cols@jminta_gmail.com Important Modified Preferences Name: Value browser.cache.disk.capacity: 358400 browser.cache.disk.smart_size.first_run: false browser.cache.disk.smart_size.use_old_max: false browser.cache.disk.smart_size_cached_value: 358400 extensions.lastAppVersion: 31.1.0 font.name.monospace.el: Consolas font.name.monospace.tr: Consolas font.name.monospace.x-baltic: Consolas font.name.monospace.x-central-euro: Consolas font.name.monospace.x-cyrillic: Consolas font.name.monospace.x-unicode: Consolas font.name.monospace.x-western: Consolas font.name.sans-serif.el: Calibri font.name.sans-serif.tr: Calibri font.name.sans-serif.x-baltic: Calibri font.name.sans-serif.x-central-euro: Calibri font.name.sans-serif.x-cyrillic: Calibri font.name.sans-serif.x-unicode: Calibri font.name.sans-serif.x-western: Calibri font.name.serif.el: Cambria font.name.serif.tr: Cambria font.name.serif.x-baltic: Cambria font.name.serif.x-central-euro: Cambria font.name.serif.x-cyrillic: Cambria font.name.serif.x-unicode: Cambria font.name.serif.x-western: Cambria font.size.fixed.el: 14 font.size.fixed.tr: 14 font.size.fixed.x-baltic: 14 font.size.fixed.x-central-euro: 14 font.size.fixed.x-cyrillic: 14 font.size.fixed.x-unicode: 14 font.size.fixed.x-western: 14 font.size.variable.el: 17 font.size.variable.tr: 17 font.size.variable.x-baltic: 17 font.size.variable.x-central-euro: 17 font.size.variable.x-cyrillic: 17 font.size.variable.x-unicode: 17 font.size.variable.x-western: 17 gfx.direct3d.last_used_feature_level_idx: 0 mail.openMessageBehavior.version: 1 mail.winsearch.firstRunDone: true mailnews.database.global.datastore.id: bda4b052-049c-443a-9adf-5cf083edb31 network.cookie.prefsMigrated: true places.database.lastMaintenance: 1409525478 places.history.expiration.transient_current_max_pages: 104858 places.history.expiration.transient_optimal_database_size: 167772160 plugin.importedState: true print.print_printer: HP Photosmart 2600 series print.printer_HP_Photosmart_2600_series.print_bgcolor: false print.printer_HP_Photosmart_2600_series.print_bgimages: false print.printer_HP_Photosmart_2600_series.print_colorspace: print.printer_HP_Photosmart_2600_series.print_command: print.printer_HP_Photosmart_2600_series.print_downloadfonts: true print.printer_HP_Photosmart_2600_series.print_duplex: 0 print.printer_HP_Photosmart_2600_series.print_edge_bottom: 0 print.printer_HP_Photosmart_2600_series.print_edge_left: 0 print.printer_HP_Photosmart_2600_series.print_edge_right: 0 print.printer_HP_Photosmart_2600_series.print_edge_top: 0 print.printer_HP_Photosmart_2600_series.print_evenpages: true print.printer_HP_Photosmart_2600_series.print_footercenter: print.printer_HP_Photosmart_2600_series.print_footerleft: &PT print.printer_HP_Photosmart_2600_series.print_footerright: &D print.printer_HP_Photosmart_2600_series.print_headercenter: print.printer_HP_Photosmart_2600_series.print_headerleft: &T print.printer_HP_Photosmart_2600_series.print_headerright: &U print.printer_HP_Photosmart_2600_series.print_in_color: true print.printer_HP_Photosmart_2600_series.print_margin_bottom: 0.5 print.printer_HP_Photosmart_2600_series.print_margin_left: 0.5 print.printer_HP_Photosmart_2600_series.print_margin_right: 0.5 print.printer_HP_Photosmart_2600_series.print_margin_top: 0.5 print.printer_HP_Photosmart_2600_series.print_oddpages: true print.printer_HP_Photosmart_2600_series.print_orientation: 0 print.printer_HP_Photosmart_2600_series.print_page_delay: 50 print.printer_HP_Photosmart_2600_series.print_pagedelay: 500 print.printer_HP_Photosmart_2600_series.print_paper_data: 9 print.printer_HP_Photosmart_2600_series.print_paper_height: 11.00 print.printer_HP_Photosmart_2600_series.print_paper_name: print.printer_HP_Photosmart_2600_series.print_paper_size: 4391016 print.printer_HP_Photosmart_2600_series.print_paper_size_type: 0 print.printer_HP_Photosmart_2600_series.print_paper_size_unit: 1 print.printer_HP_Photosmart_2600_series.print_paper_width: 8.50 print.printer_HP_Photosmart_2600_series.print_plex_name: print.printer_HP_Photosmart_2600_series.print_resolution: 0 print.printer_HP_Photosmart_2600_series.print_resolution_name: print.printer_HP_Photosmart_2600_series.print_reversed: false print.printer_HP_Photosmart_2600_series.print_scaling: 1.00 print.printer_HP_Photosmart_2600_series.print_shrink_to_fit: true print.printer_HP_Photosmart_2600_series.print_to_file: false print.printer_HP_Photosmart_2600_series.print_unwriteable_margin_bottom: 0 print.printer_HP_Photosmart_2600_series.print_unwriteable_margin_left: 0 print.printer_HP_Photosmart_2600_series.print_unwriteable_margin_right: 0 print.printer_HP_Photosmart_2600_series.print_unwriteable_margin_top: 0 Graphics Adapter Description: NVIDIA GeForce GTX 580 Vendor ID: 0x10de Device ID: 0x1080 Adapter RAM: 1536 Adapter Drivers: nvd3dumx,nvwgf2umx,nvwgf2umx nvd3dum,nvwgf2um,nvwgf2um Driver Version: 9.18.13.2049 Driver Date: 6-21-2013 Direct2D Enabled: true DirectWrite Enabled: true (6.1.7601.17789) ClearType Parameters: ClearType parameters not found WebGL Renderer: false GPU Accelerated Windows: 1/1 Direct3D 10 AzureCanvasBackend: direct2d AzureSkiaAccelerated: 0 AzureFallbackCanvasBackend: cairo AzureContentBackend: direct2d JavaScript Incremental GC: 1 Accessibility Activated: 0 Prevent Accessibility: 0 Library Versions Expected minimum version Version in use NSPR 4.10.6 4.10.6 NSS 3.16.2 Basic ECC 3.16.2 Basic ECC NSS Util 3.16.2 3.16.2 NSS SSL 3.16.2 Basic ECC 3.16.2 Basic ECC NSS S/MIME 3.16.2 Basic ECC 3.16.2 Basic ECC Actual results: Top bar is corrupted. The standard 3 windows buttons (Minimise close etc) are not visible. Though their function is still there Expected results: I should have had the standard windows interface with the 3 buttons in the top right corner of the Thunderbird window. See attached jpg

Restarted Thunderbird in Safe mode and the three windows buttons are there and the interface looks normal. However when I close then restart Thunderbird the issue is back. I think the dark (Black rectangle as visible in the jpg)area is masking the 3 buttons. If I hover my mouse over the area I can see a change in the underlying colour as the mouse passes over each buttons masked position.

Also If I Disable Desktop composition in the Thunderbird properties page it runs just fine. So to me there is an issue with the Aero interface with Thunderbird 31.1.0

furthermore all fonts in both messages and screen elements are not sharp ... wheter running in Aero or not. Switching between Thunderbird and Firefox illustrates this clearly. There is something seriously wrong with the 31.1.0 version of Thunderbird.

running in SAFE mode and appearance is normal, fonts are sharp and crisp, all windows elements are present. Be nice if as a temporary workaround I could launch Thunderbird in SAFE mode without have to manually do this .... or revert back to the previous version ... though I am worried I will loose Emails and Address books if I do this ?

Version 31 via bug 950133 reenables HWA - graphics acceleration.

Would the suggestion here fix this issue ?: http://www.askvg.com/how-to-disable-hardware-acceleration-gpu-rendering-in-mozilla-firefox-4-0-to-fix-font-problem/ i.e> Disable Hardware Acceleration in Firefox and Thunderbird Using about:config If you can't follow above mentioned steps, try following alternative method: 1. Open Mozilla Firefox and type about:config in the addressbar and press Enter. Thunderbird users will need to go to Tools -> Options -> Advanced menu and then click on "Config Editor" button. It'll ask for confirmation, click on I'll be careful, I promise! button. 2. Now look for following 2 preferences: gfx.direct2d.disabled layers.acceleration.disabled 3. Both preferences would be set to false. Double-click on both of them and it'll change their values to true. That's it. Restart the program and it'll turn hardware acceleration feature off.

Just updated to 31.1.1 and the bug is still there ! Any help in solving this issue ?

ttail, please can you try this: Open the Options window go to Advanced/General. Now click on "Config Editor..." and confirm with pressing the button. Now enter in search field gfx.direct2d.disabled. In the list double-click now on this entry, it will be become bold now. Close TB and restart it. You could also try other graphic driver versions but the way I wrote above should be the easiest. Is it now as it should be?

Bingo that worked. It is now normal.

Closing as WORKSFORME as this is likely a driver ssue.

(In reply to Richard Marti (:Paenglab) from comment #10) > Closing as WORKSFORME as this is likely a driver ssue. I think Invalid is more appropriate. However, it may be nice to know if an updated driver helps the user. ttail, there is a newer driver available. Can you install it, reenable HWA and tell us if problem is gone? "GeForce 344.11 Driver - WHQL Version: 344.11 - Release Date: Thu Sep 18, 2014"

The driver link is http://www.geforce.com/drivers/results/77837