Created attachment 114694
Noisy screenshot from mplayer -vo xv
On a Broadwell system (X1 Carbon 3rd generation), playing video through the default xv adaptor "Intel(R) Textured Video" adds piles of green and purple noise to the image. I can reliably reproduce this by playing back any video using "mplayer -vo xv". This noise doesn't appear when using some other video output (such as -vo gl) or when using xv adaptor #1: "Intel(R) Video Sprite" (though that has other issues).
I'll attach three screenshots of the same video frame: one from mplayer -vo xv (showing the noise), one from mplayer -vo gl (not showing the noise), and one dumped via mplayer's internal screenshot mechanism by hitting alt-s (which turns a frame into a screenshot without sending it to the video output, so it doesn't include the noise).
The noise doesn't dance around; it's consistent for any given frame, and slight changes to the frame seem to produce slight changes to the noise rather than completely different noise.
Created attachment 114694
Noisy screenshot from mplayer -vo xv
On a Broadwell system (X1 Carbon 3rd generation), playing video through the default xv adaptor "Intel(R) Textured Video" adds piles of green and purple noise to the image. I can reliably reproduce this by playing back any video using "mplayer -vo xv". This noise doesn't appear when using some other video output (such as -vo gl) or when using xv adaptor #1: "Intel(R) Video Sprite" (though that has other issues).
I'll attach three screenshots of the same video frame: one from mplayer -vo xv (showing the noise), one from mplayer -vo gl (not showing the noise), and one dumped via mplayer's internal screenshot mechanism by hitting alt-s (which turns a frame into a screenshot without sending it to the video output, so it doesn't include the noise).
The noise doesn't dance around; it's consistent for any given frame, and slight changes to the frame seem to produce slight changes to the noise rather than completely different noise.
Driver version: 2.99.917
Xorg server version: 7.7
Mesa version: 10.4.2
Kernel version: 4.0-rc5
Debian sid
Will attach Xorg.0.log, glxinfo output, and xvinfo output.
Graphics card (from lspci -vvv):
00:02.0 VGA compatible controller: Intel Corporation Broadwell-U Integrated Graphics (rev 09) (prog-if 00 [VGA controller])
Capabilities: [90] MSI: Enable+ Count=1/1 Maskable- 64bit-
Address: fee00018 Data: 0000
Capabilities: [d0] Power Management version 2
Flags: PMEClk- DSI+ D1- D2- AuxCurrent=0mA PME(D0- ,D1-,D2- ,D3hot- ,D3cold- )
Status: D0 NoSoftRst- PME-Enable- DSel=0 DScale=0 PME-
Capabilities: [a4] PCI Advanced Features
AFCap: TP+ FLR+
AFCtrl: FLR-
AFStatus: TP-
Subsystem: Lenovo Device 2227
Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx+
Status: Cap+ 66MHz- UDF- FastB2B+ ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
Latency: 0
Interrupt: pin A routed to IRQ 54
Region 0: Memory at f0000000 (64-bit, non-prefetchable) [size=16M]
Region 2: Memory at e0000000 (64-bit, prefetchable) [size=256M]
Region 4: I/O ports at 3000 [size=64]
Expansion ROM at <unassigned> [disabled]
Kernel driver in use: i915