problems to use zenity (in my application mkusb) - after update/dist-upgrade

[sudodus]

Bug #1562591 continues here:

After today's update/dist-upgrade zenity windows are flaky. Sometimes they are empty, and the next attempt they work again. Finally I rebooted, and then I was prompted to write this bug report.

I made a second update/dist-upgrade before trying to run mkusb again - but the bug is still alive. See the attached files.

*** Error in `/usr/lib/i386-linux-gnu/webkit2gtk-4.0/WebKitWebProcess': malloc(): memory corruption (fast): 0x80df0662 ***
...

ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: zenity 3.18.1.1-1ubuntu2
ProcVersionSignature: Ubuntu 4.4.0-15.31-generic 4.4.6
Uname: Linux 4.4.0-15-generic i686
NonfreeKernelModules: nvidia
ApportVersion: 2.20-0ubuntu3
Architecture: i386
CurrentDesktop: LXDE
Date: Sun Mar 27 22:51:35 2016
InstallationDate: Installed on 2016-02-28 (28 days ago)
InstallationMedia: Lubuntu 16.04 LTS "Xenial Xerus" - Alpha i386 (20160226)
SourcePackage: zenity
UpgradeStatus: No upgrade log present (probably fresh install)

[sudodus (nio-wiklund)]

I installed mkusb into a clean current Lubuntu Xenial i386 live system. It seems to work well - also the zenity windows. The differences compared my installed system are

- Live versus Installed
- free versus nvidia proprietary driver (version 304.131)
- clean versus contains several packages and settings (also from older daily files)

I suspect that webkit and the nvidia proprietary driver have problems to cooperate, but I am far from sure.

[sudodus (nio-wiklund)]

I removed the nvidia 304.131 driver from my installed system. After rebooting I'm prompted for a new bug directly at log in. It seems to affect xorg-server, but the free desktop graphics driver (nouveau) seems to work with my nvidia Geforce GT 430 card.

I tried mkusb twice (making persistent live drives) and the zenity windows worked without any glitch. It is too early to be sure, but it indicates that there are problems with the nvidia graphics. I hope it will be fixed before 16.04 LTS will be released.

[sudodus (nio-wiklund)]

I have updated/upgraded a few times (during 4 days), and the problem persists, when I use the proprietary nvidia 304 driver (but things work with the free nouveau driver).

Today I tried nvidia-current --> 304

and also nvidia-current-updates (which was worse, I had to hard reboot, when trying to start Thunderbird while mkusb (with zenity and webkit) was doing its job. Not even SysRq + reisub worked.

So I went back to the nouveau driver, where it works to run mkusb with zenity and webkit.