Created attachment 182240 [details] Callstack by VS2019 Make sure Skia is enabled. Make sure presenter console is enabled. Make sure a second screen is attached. Load a presentation. Start slideshow => Crash. I see the error in Version: 7.5.0.0.alpha0+ (x64) / LibreOffice Community Build ID: 81a7c2543e04eb6792fccece01f514bf653a5ad0 CPU threads: 8; OS: Windows 10.0 Build 19043; UI render: Skia/Raster; VCL: win Locale: de-DE (en_US); UI: en-US Calc: CL threaded
Could you give a try at https://wiki.documentfoundation.org/QA/FirstSteps#Graphics-related_issues_.28_Skia_.29 if you still reproduce the assertion provide: <user profile>/cache/skia.log ?
Created attachment 182245 [details] Skia.log The error does not happen, if I disable Skia.
Did you check you got last upgrade of the driver of your graphic card? Also, I thought that brand of the graphic card and other info were in skia.log
Created attachment 182268 [details] Info about graphic card (In reply to Julien Nabet from comment #3) > Did you check you got last upgrade of the driver of your graphic card? It is an onboard-card and I surely will not do any such deep update without a very strong need. > > Also, I thought that brand of the graphic card and other info were in > skia.log I have attached the info from the Intel software. Look at the comment at the assert: assert(mAnyAccessCount == 0); // can't reset mBuffer if there's a read access pointing to it https://opengrok.libreoffice.org/xref/core/vcl/skia/salbmp.cxx?r=2692dc5f#1311 I doubt that it is a problem with a specific graphics card.
Thank you for your feedback Regina. About graphic card driver, it's not big deal to update but no pb. Since I know nothing more about Skia (so my knowledge is very near to null :-)), I'll let Luboš, the Skia's expert, talk.
Luboš Luňák committed a patch related to this issue. It has been pushed to "master": https://git.libreoffice.org/core/commit/20de4e3ca38e177ea61e818b32d82008758b8caa do not check and refcount Info access to Skia bitmaps (tdf#150817) It will be available in 7.5.0. The patch should be included in the daily builds available at https://dev-builds.libreoffice.org/daily/ in the next 24-48 hours. More information about daily builds can be found at: https://wiki.documentfoundation.org/Testing_Daily_Builds Affected users are encouraged to test the fix and report feedback.