Created attachment 452386 [details] Screenshot demonstrating problem Problem has existed since the first mesa-13_rc. Video is a recording from MythTV (affects all videos from what I can gather). Downgrading to mesa-12* fixes problem. Have tried all VLC video output options, frame buffer works fine, the rest produce the same garbled output. $ sudo /usr/sbin/lspci | grep VGA 01:00.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] Cedar [Radeon HD 5000/6000/7350/8350 Series] Provided that as the problem doesn't occur on my laptop (nVidia something) VLC version 2.2.4. Willing to play around with various options etc if anyone can make suggestions (although I'm away most of this weekend) Thanks. Portage 2.3.2 (python 3.4.5-final-0, default/linux/amd64/13.0/desktop/plasma/systemd, gcc-5.4.0, glibc-2.23-r2, 4.8.6-gentoo x86_64) ================================================================= System uname: Linux-4.8.6-gentoo-x86_64-Intel-R-_Core-TM-_i7-3820_CPU_@_3.60GHz-with-gentoo-2.3 KiB Mem: 8156896 total, 2688764 free KiB Swap: 8388604 total, 8257056 free Timestamp of repository gentoo: Fri, 04 Nov 2016 13:42:22 +0000 sh bash 4.4-r1 ld GNU ld (Gentoo 2.26.1 p1.0) 2.26.1 ccache version 3.2.7 [enabled] app-shells/bash: 4.4-r1::gentoo dev-java/java-config: 2.2.0-r3::gentoo dev-lang/perl: 5.24.0-r2::gentoo dev-lang/python: 2.7.12::gentoo, 3.4.5::gentoo dev-util/ccache: 3.2.7::gentoo dev-util/cmake: 3.6.3::gentoo dev-util/pkgconfig: 0.29.1::gentoo sys-apps/baselayout: 2.3::gentoo sys-apps/openrc: 0.22.3::gentoo sys-apps/sandbox: 2.10-r2::gentoo sys-devel/autoconf: 2.13::gentoo, 2.69-r2::gentoo sys-devel/automake: 1.11.6-r2::gentoo, 1.14.1-r1::gentoo, 1.15-r2::gentoo 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This is probably a duplicate of media-libs/mesa-13.0.0_rc2: libGL crashes on hardened https://bugs.gentoo.org/show_bug.cgi?id=598593 as is my report: =www-client/firefox-49.0 segfaults with >=media-libs/mesa-13.0.0_rc1 on >=4.4.8-hardened-r1 https://bugs.gentoo.org/show_bug.cgi?id=598700 ( which I messed up ommiting the first digit when copying the bug number: https://bugs.gentoo.org/show_bug.cgi?id=598700#c6 see there bug 98946 instead of 598946 which is this bug I'm posting at; also wrong... but I mended that in the next comment there... really sorry for that! ) If anybody agrees that this is duplicate of 598593 pls. mark is as such (afraid to make another typo myself ;-) ).
It's possibly a duplicate, although that bug refers to other upstream bugs which are hardware specific (Intel SNA) as opposed to the Radeon I have.
It also causes corruption when Blender is started. You need to move the window with the mouse to fix it. I haven't been able to track the issue yet.
Never thought to try just moving the window... I try switching to full screen though, however that didn't fix it. Got the same corruption, just bigger. I'll give it a try when I get home.
No such luck for me... played around with the window position and size, but no impact, problem remained.
Just installed 13.0.3 to see if anything had changed... nothing. But I did have a play around to see if I could learn anything. Turns out, it's not the accelerated output as I'd originally figured, it's actually down to VDPAU. If I select "VA-API video decoder via DRM" instead of "automatic" or "VDPAU video decoder" all actually works just fine. I can provide further details of anything anyone might think is useful, I just don't know what that might be :)
Dan, is this issue limited to VLC or do other media players (mpv, etc.) experience it? Is this just limited to mpeg2 videos or are other codecs impacted (h264 would be a good test case)? Based on your last comment, I actually think it may be related to: https://bugs.freedesktop.org/show_bug.cgi?id=98914 I confirmed the Gentoo mesa-13.0.3 does not have the simple patch in that bug. If this is the culprit, I'm betting that's the fix. You should be able to take the patch attached to that bug, through it into /etc/portage/patches/media-libs/mesa, rebuild mesa, rebuild vlc (might not be necessary) to see if it works. Thanks, Nick
Skipped forward to the patch in the bug referred to because the description in there seemed like a good fit and I didn't have any other players installed..... and it works like a treat :) I can go back and do a bit more testing if you like, but given the patch size and result, it seems a bit moot. Thanks for looking into it... judging by the reported date, that bug hadn't been opened when I went looking.
Thanks for confirming Dan. I don't have any AMD hardware at the moment to test myself, but yeah, based on the description and timing, I agree that it's your bug. I'll see if I can get a mesa Gentoo developer to pull in the fix.
Thanks for tracking the fix down. It's tagged for the 13.0 stable branch, so it should be included in 13.0.4.
Just tested in 17.0.0_rc2 and all seems well :)
