[Desktop-packages] [Bug 1585329] Re: Sometimes a black rectangle appears briefly under the mouse cursor

2016-09-05 Thread Christopher M. Penalver
Bruno Nova, the next step is to fully reverse commit bisect from kernel 4.4 to 4.8-rc5 in order to identify the last bad commit, followed immediately by the first good one. Once this good commit has been identified, it may be reviewed for backporting. Could you please do this following

[Desktop-packages] [Bug 1585329] Re: Sometimes a black rectangle appears briefly under the mouse cursor

2016-09-05 Thread Bruno Nova
I tested a few more kernels. The bug is also fixed in v4.6-rc1. Don't know about earlier kernels. -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to xorg-server in Ubuntu. https://bugs.launchpad.net/bugs/1585329 Title: Sometimes a black

[Desktop-packages] [Bug 1585329] Re: Sometimes a black rectangle appears briefly under the mouse cursor

2016-09-05 Thread Bruno Nova
This bug has some similarities with this one: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1553503 -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to xorg-server in Ubuntu. https://bugs.launchpad.net/bugs/1585329 Title: Sometimes

[Desktop-packages] [Bug 1585329] Re: Sometimes a black rectangle appears briefly under the mouse cursor

2016-09-05 Thread Bruno Nova
This bug has some similarities with this one: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1553503 -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to xorg-server in Ubuntu. https://bugs.launchpad.net/bugs/1585329 Title: Sometimes

[Desktop-packages] [Bug 1585329] Re: Sometimes a black rectangle appears briefly under the mouse cursor

2016-09-05 Thread Bruno Nova
I had an old hard drive around, so I installed Ubuntu to it. I installed the latest kernel from that link (v4.8-rc5), and the bug is fixed there. I haven't installed the NVidia proprietary drivers. $ uname -a Linux bruno-mitsai 4.8.0-040800rc5-generic #201609041832 SMP Sun Sep 4 22:34:01 UTC

[Desktop-packages] [Bug 1585329] Re: Sometimes a black rectangle appears briefly under the mouse cursor

2016-09-02 Thread Christopher M. Penalver
Bruno Nova, in order to allow additional upstream developers to examine the issue, at your earliest convenience, could you please test the latest upstream kernel available from http://kernel.ubuntu.com/~kernel-ppa/mainline/?C=N;O=D ? Please keep in mind the following: 1) The one to test is at

[Desktop-packages] [Bug 1585329] Re: Sometimes a black rectangle appears briefly under the mouse cursor

2016-09-02 Thread Bruno Nova
Yes, after removing the nvidia proprietary driver and replacing it with nouveau I can still reproduce the issue. ** Changed in: xorg-server (Ubuntu) Status: Incomplete => New -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to

[Desktop-packages] [Bug 1585329] Re: Sometimes a black rectangle appears briefly under the mouse cursor

2016-09-02 Thread Christopher M. Penalver
Bruno Nova, to clarify, if you remove the nvidia proprietary driver, is this still reproducible? ** Description changed: I'm on 16.04, using a laptop with Nvidia Optimus (Nvidia driver installed, Intel card selected). The problem also occurs in a guest session. It didn't occur in 14.04.

[Desktop-packages] [Bug 1585329] Re: Sometimes a black rectangle appears briefly under the mouse cursor

2016-09-02 Thread Bruno Nova
** Changed in: xorg-server (Ubuntu) Status: Incomplete => New -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to xorg-server in Ubuntu. https://bugs.launchpad.net/bugs/1585329 Title: Sometimes a black rectangle appears briefly

[Desktop-packages] [Bug 1585329] Re: Sometimes a black rectangle appears briefly under the mouse cursor

2016-09-02 Thread Bruno Nova
Sure Christopher! A screencast couldn't record the graphical glitches, so I recorded a video with my phone and attached it to this comment. In the video I have gnome-terminal open. At the start, I press and hold the 'A' key on the keyboard and move the mouse cursor *inside* the terminal window.

[Desktop-packages] [Bug 1585329] Re: Sometimes a black rectangle appears briefly under the mouse cursor

2016-09-02 Thread Christopher M. Penalver
Bruno Nova, thank you for reporting this and helping make Ubuntu better. Would it be possible to obtain a screenshot, video, or screencast of this issue via https://help.ubuntu.com/community/Screencast ? ** Tags added: latest-bios-1.30 ** Tags added: regression-release ** No longer affects:

[Desktop-packages] [Bug 1585329] Re: Sometimes a black rectangle appears briefly under the mouse cursor

2016-08-29 Thread Bruno Nova
Even more interesting... I'm developing a small game in SDL. It runs in a window, hides the cursor, and in every frame moves the cursor to the center of the window. But if I move the mouse fast enough for the cursor to exit the window, it is shown for a split second and, more importantly, that

[Desktop-packages] [Bug 1585329] Re: Sometimes a black rectangle appears briefly under the mouse cursor

2016-08-29 Thread Bruno Nova
I now switched to the NVidia card, and I couldn't reproduce the bug. So this may be specific to Intel. -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to xorg-server in Ubuntu. https://bugs.launchpad.net/bugs/1585329 Title: Sometimes a