Emulator

For future reference, the latest git version as of right now (15th October, 14:36 UTC) is https://github.com/dolphin-emu/dolphin/commit/183f3c375971233213bbc4a222a76c8f3940ebe5

Does this problem happen in Dolphin 5.0 too? If it doesn't, it would be very helpful if you could bisect the exact version where it starts happening.

Use this tool if you need help bisecting

https://forums.dolphin-emu.org/Thread-green-notice-development-thread-unofficial-dolphin-bisection-tool-for-finding-broken-builds

whoops, linux

Nope, that tool is for Windows. You can use git bisect instead.

JosJuice wrote:

Nope, that tool is for Windows. You can use git bisect instead.

I don't know how to do that.
But I know how to download an older revision from git web page.
I'll give a try to the 9th october version or older...

That's fine. Use whatever way you are comfortable with.

I compiled two older versions:
from the 9th and 3th...same bug.

I try to install last version from this PPA:
https://launchpad.net/~dolphin-emu/+archive/ubuntu/ppa
same message

I installed the version from Ubuntu 16.10 official repo, same message...
Someone could try and tell me if it has the same bug as me on Ubuntu 16.10?

I uninstalled NVIDIA drivers to test with open source drivers, same message...

Same message with the dolphin nogui version.
How is it possible to obtain a debug log?

I installed the last PPA version from this page https://launchpad.net/~dolphin-emu/+archive/ubuntu/ppa on another computer with Ubuntu 16.10 installed, dolphin crashed with same error message...
Please tell me how I could help you to debug this crash.

Does the problem happen in the stable 5.0 version?

Looks like it's a PIE specific issue with Ubuntu 16.10 as it's enabled by default: https://wiki.ubuntu.com/SecurityTeam/PIE

Can you try compiling from source, and use the -no-pie option?

Josjuice: where is the dolphin stable version for Ubuntu? Wich version?
Did you tried to launch Dolphin on Ubuntu 16.10?

The stable 5.0 version is https://github.com/dolphin-emu/dolphin/releases/tag/5.0

However, you should really try Fog's suggestion first. This is very likely to be a PIE issue, and in that case, 5.0 won't work either.

No, I haven't tried launching Dolphin on Ubuntu 16.10, because I don't use Ubuntu generally.

OK, I will compile the 5.0 stable version with option:

$make CUSTOMOPT="-no-pie"

the command is correct?

I compiled the 5.0 stable version with option:

$make CUSTOMOPT="-no-pie"

and I obtain the same crash...

On Ubuntu 16.04 last dolphin git version worked great...:/

legluondunet wrote:

I compiled the 5.0 stable version with option:

$make CUSTOMOPT="-no-pie"

and I obtain the same crash...

On Ubuntu 16.04 last dolphin git version worked great...:/

Try changing this line: https://github.com/dolphin-emu/dolphin/blob/master/CMakeLists.txt#L205

To the following: set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -fno-pie -no-pie")

the last git compiled and worked OK if I:

change this line: https://github.com/dolphin-emu/dolphin/blob/master/CMakeLists.txt#L205

To the following: set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -fno-pie -no-pie")

Thank you

Fog, I'm pretty sure that the fact that Ubuntu 16.10 enables PIE by default isn't what should be "fixed". Is the issue here that the x64 JIT doesn't support PIE, or that we should change how Dolphin is built so it won't try to build a PIE?

I fear in the long term, we have to be PIE compatible. More plattforms will move to this way, and at some point, they'll make PIE as an requirement (eg on android right now)

JosJuice wrote:

Fog, I'm pretty sure that the fact that Ubuntu 16.10 enables PIE by default isn't what should be "fixed". Is the issue here that the x64 JIT doesn't support PIE, or that we should change how Dolphin is built so it won't try to build a PIE?

The easy way out is adding the GCC flag to build with no PIE, but the proper solution would be to fix the JIT so that it can run in PIE.

Can you try building this PR directly to see if it resolves the issue as well?

https://github.com/dolphin-emu/dolphin/pull/4365