https://bugs.kde.org/show_bug.cgi?id=393241
--- Comment #6 from Christian (Fuchs) <k...@fuchsnet.ch> --- Just to have it documented: On nvidia hardware, it throws a 1286 OpenGL error, thrown around if (prevScissorTest) glDisable(GL_SCISSOR_TEST); extraFuncs->glBlitFramebuffer(0, 0, size.width(), size.height(), 0, 0, size.width(), size.height(), GL_COLOR_BUFFER_BIT, GL_NEAREST) and qDebug() << "Read FBO status:" << funcs->glCheckFramebufferStatus(GL_READ_FRAMEBUFFER); qDebug() << "Draw FBO status:" << funcs->glCheckFramebufferStatus(GL_DRAW_FRAMEBUFFER); gives Read FBO status: 36061 Draw FBO status: 36053 and with the OpenGL context hack by frederikh we get QXcbConnection: XCB error: 2 (BadValue), sequence: 1680, resource id: 92274704, major code: 141 (Unknown), minor code: 3 0x506: GL_INVALID_FRAMEBUFFER_OPERATION error generated. Framebuffer bindings are not framebuffer complete. 0x20071: Buffer detailed info: Buffer object 3 (bound to GL_ARRAY_BUFFER_ARB, usage hint is GL_STATIC_DRAW) will use VIDEO memory as the source for buffer object operations. 0x20071: Buffer detailed info: Buffer object 4 (bound to GL_ELEMENT_ARRAY_BUFFER_ARB, usage hint is GL_STATIC_DRAW) will use VIDEO memory as the source for buffer object operations. 0x20071: Buffer detailed info: Buffer object 5 (bound to GL_ARRAY_BUFFER_ARB, usage hint is GL_STATIC_DRAW) will use VIDEO memory as the source for buffer object operations. 0x20071: Buffer detailed info: Buffer object 6 (bound to GL_ELEMENT_ARRAY_BUFFER_ARB, usage hint is GL_STATIC_DRAW) will use VIDEO memory as the source for buffer object operations. 0x20071: Buffer detailed info: Buffer object 7 (bound to GL_ARRAY_BUFFER_ARB, usage hint is GL_STATIC_DRAW) will use VIDEO memory as the source for buffer object operations. with an nvidia card and nvidia driver. I was able to get also no previews on nouveau, but due to limited time was not able to reproduce all of it on nouveau with the above debugging enabled. For nvidia users: reverting https://cgit.kde.org/plasma-framework.git/commit/?id=612494e2b2e9265d33ce148332d5f490b024a3bd and https://cgit.kde.org/plasma-framework.git/commit/?id=42d3fde1eef6866640cee8671b07dc81fa2df28c is a workaround so you can have the previews back whilst waiting for a proper solution. -- You are receiving this mail because: You are watching all bug changes.
