vlc volume slider at 0 on open v2.2.5 x64 beta

the volume is at zero when i open vlc. it does not save volume. latest 2.2.5 x64 beta 2016-11-16 windows 7 x64 latest service pack dell laptop. it also does not work on my lenovo laptop win7 x64.

Added attachment:

• vlc-volume-slider-zero.png

version referenced above is nightly build

I cannot find any changes between 2.2.4 and preversions of 2.2.5 w.r.t. audio volume on Windows. Are you sure this was working in 2.2.4 or ever?

It worked on 2.2.4 but after a few nightly versions the 2.2.5 set to zero and will not save at all. i tried uninstalling and deleting all config/reg files. the only customization i did was add the slow/faster buttons to the interface to view movies in faster 1.5x speed.

what i have noticed in config file vlcrc becomes zero if i change the volume. if i set it to 0.5 it shows as 50 percent until i try to change the volume then it resets to zero.

Audio volume (float)

directx-volume=0.000000

assigned to @jbk

added Component::Audio: Windows plugins label

This is weird and unexpected. Could be runtime issue?

I seem to be able to reproduce the issue even with 2.2.0, only on windows though

once it occurs and sets volume to zero it happens on any version. maybe 2.2.5 might have installed a component that is defunct and it does not get removed. if i uninstall 2.2.5 and then reinstall 2.2.4 it still happens.

Every time you test different versions of VLC (nightlies mostly), make sure to delete the %AppData%\VLC directory in between to rule out and settings issues.

I have tested it, the issue occurs since commit d5427879 (configure: check only for adequate math optimizations (fix #16907 (closed)))

Since this commit, the compiler (GCC 5.3.1) warns every time the file config.h is included:

In file included from <file>:
WARNING : ../../config.h:799: 0:  ignoring #pragma STDC FENV_ACCESS [-Wunknown-pragmas]
 # pragma STDC FENV_ACCESS OFF
 ^
WARNING : ../../config.h:800: 0:  ignoring #pragma STDC FP_CONTRACT [-Wunknown-pragmas]
 # pragma STDC FP_CONTRACT ON
 ^

Indeed Daniel you are correct. I failed miserably during my tests :(

Anyway, patch on the mailing list, this is caused by directx-volume to be a float, but the setting gets assigned an integer limit, which is undefined behavior. Patch is on the ML

assigned to @chouquette and unassigned @jbk

https://patches.videolan.org/patch/15326/

added Status::fixed label

closed