*[VirtualGL-Users] The OP is having a problem with TurboVNC, not VirtualGL.
The nVidia driver is not relevant to the problem. Please let me handle
this. Thanks. On 2/22/17 1:48 PM, Jason Kurtz wrote: > Could you also run
the following commands on the ubuntu server. > List all packages installed
on the system. > sudo su - > dpkg --admindir=/var/lib/dpkg/
--get-selections > installed.packages > The current Kernel Version. > uname
-a > installed.kernel > The jre installed on the system > The jdk the
system is using > java -version 2> installed.java > The nvidia driver
version loaded in the kernel. > dmesg | grep nvidia > installed.nvidia > I
had a similar problem and when I upgraded to 16.04 lts and the latest >
nvidia driver it stopped.
<https://sourceforge.net/p/virtualgl/mailman/message/35684268/>*
From: Jason Kurtz <tekcommnv@gm...> - 2017-02-23 14:28:31
*Attachments:* Message as HTML
<https://sourceforge.net/p/virtualgl/mailman/attachment/CADO%2BGxwCAOx9JSSURsAMKQt%2B_k-RaEJ%2BTLXj_AxfaCHmAFMmwA%40mail.gmail.com/1/>
> The OP is having a problem with TurboVNC, not VirtualGL. The nVidia
> driver is not relevant to the problem. Please let me handle this. Thanks.
> On 2/22/17 1:48 PM, Jason Kurtz wrote:
>
> DRC, I was agreeing with you that it is not the nvidia driver and also
disagreeing with you that it is a problem with Turbovnc.
This is a known issue affecting a lot of distro's including ubuntu 14.04.
The bug is in many versions of libxcb and is a 32-bit counter rollover
problem that has been known for a few years:
https://bugs.freedesktop.org/show_bug.cgi?id=71338
Not all versions of libxcb are affected libxcb-1.9-5 has it, libxcb-1.5-1
doesn't. From the bug list, 64-bits OS shouldn't be affected, but It has
also triggered on at least one version.
It can be verified the following way.
The following program will crash in less than 15 minutes on affected
libraries:
// Compile with: gcc test.c -lX11 && time ./a.out
#include <X11/Xlib.h>
void main(void) {
Display *d = XOpenDisplay(NULL);
if (d)
for(;;)
XNoOp(d);
}
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