| Summary: | using Randr to invert the screen exhibits majors flickering when playing video | ||
|---|---|---|---|
| Product: | xorg | Reporter: | asergiu <adrian> |
| Component: | Driver/intel | Assignee: | Gordon Jin <gordon.jin> |
| Status: | RESOLVED DUPLICATE | QA Contact: | Xorg Project Team <xorg-team> |
| Severity: | major | ||
| Priority: | high | CC: | adrian |
| Version: | 7.4 (2008.09) | ||
| Hardware: | All | ||
| OS: | Linux (All) | ||
| Whiteboard: | |||
| i915 platform: | i915 features: | ||
In fact I noticed performance issues whenever the screeen is rotated. Not only with my application. Viewing videos and in general anything that uses Xv I think has performance penalties - resulting in severe flickering. Adrian I'm wondering if this is related to bug#16612. Please attach dmesg and Xorg.0.log. This can also be reproduced with rotation by 90 degrees, right? In fact I think you are right Gordon. It should have something with the way rotation is handled by blitting the front buffer to rotate buffer and with the moment of the blit. I don't have the xorg.conf with me today - I will send it tomorrow. However I did more research with our application (let's call it AirApp) and with vlc displaying videos. AirApp forces the mouse cursor to a position and hides it continuosly. Now this causes the flickering when the screen is rotated - and I think is due to the improper moment maybe of the blit operation. When the screen is normal - there is no problem with the AirApp moving and hiding the mouse pointer continuously. If I keep the mouse button pressed in a location on the border of the screen the flicker dissapears (no more mouse move) - is just the video that lags a bit. So in conclusion I think there a a few issues with the way rotation is implemented - maybe timing issues. I will ask tomorrow the application developers to remove mouse moving and hiding to see if it partially corrects the problem. The AirApp works correclty on a Nvidia video card with Nvidia driver (rotated). I did not see performance issues there. Adrian In fact I think you are right Gordon. It should have something with the way rotation is handled by blitting the front buffer to rotate buffer and with the moment of the blit. I don't have the xorg.conf with me today - I will send it tomorrow. However I did more research with our application (let's call it AirApp) and with vlc displaying videos. AirApp forces the mouse cursor to a position and hides it continuosly. Now this causes the flickering when the screen is rotated - and I think is due to the improper moment maybe of the blit operation. When the screen is normal - there is no problem with the AirApp moving and hiding the mouse pointer continuously. If I keep the mouse button pressed in a location on the border of the screen the flicker dissapears (no more mouse move) - is just the video that lags a bit. So in conclusion I think there a a few issues with the way rotation is implemented - maybe timing issues. I will ask tomorrow the application developers to remove mouse moving and hiding to see if it partially corrects the problem. The AirApp works correclty on a Nvidia video card with Nvidia driver (rotated). I did not see performance issues there. Adrian |
Use of freedesktop.org services, including Bugzilla, is subject to our Code of Conduct. How we collect and use information is described in our Privacy Policy.
Hi, I don't know if you guys can help me but here is go - who knows ? I have a computer with the following config 00:00.0 Host bridge: Intel Corporation Mobile 945GME Express Memory Controller Hub (rev 03) 00:02.0 VGA compatible controller: Intel Corporation Mobile 945GME Express Integrated Graphics Controller (rev 03) 00:02.1 Display controller: Intel Corporation Mobile 945GM/GMS/GME, 943/940GML Express Integrated Graphics Controller (rev 03) 00:1b.0 Audio device: Intel Corporation 82801G (ICH7 Family) High Definition Audio Controller (rev 02) 00:1c.0 PCI bridge: Intel Corporation 82801G (ICH7 Family) PCI Express Port 1 (rev 02) 00:1c.1 PCI bridge: Intel Corporation 82801G (ICH7 Family) PCI Express Port 2 (rev 02) 00:1d.0 USB Controller: Intel Corporation 82801G (ICH7 Family) USB UHCI Controller #1 (rev 02) 00:1d.1 USB Controller: Intel Corporation 82801G (ICH7 Family) USB UHCI Controller #2 (rev 02) 00:1d.2 USB Controller: Intel Corporation 82801G (ICH7 Family) USB UHCI Controller #3 (rev 02) 00:1d.3 USB Controller: Intel Corporation 82801G (ICH7 Family) USB UHCI Controller #4 (rev 02) 00:1d.7 USB Controller: Intel Corporation 82801G (ICH7 Family) USB2 EHCI Controller (rev 02) 00:1e.0 PCI bridge: Intel Corporation 82801 Mobile PCI Bridge (rev e2) 00:1f.0 ISA bridge: Intel Corporation 82801GBM (ICH7-M) LPC Interface Bridge (rev 02) 00:1f.2 IDE interface: Intel Corporation 82801GBM/GHM (ICH7 Family) SATA IDE Controller (rev 02) 00:1f.3 SMBus: Intel Corporation 82801G (ICH7 Family) SMBus Controller (rev 02) 01:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8101E/RTL8102E PCI Express Fast Ethernet controller (rev 02) 02:00.0 Ethernet controller: Atheros Communications Inc. AR242x 802.11abg Wireless PCI Express Adapter (rev 01) and using Xorg 1.5.2 xorg-intel video driver 2.5.0 II) Loading /usr/lib/xorg/modules//drivers/intel_drv.so (II) Module intel: vendor="X.Org Foundation" compiled for 1.5.2, module version = 2.5.0 Module class: X.Org Video Driver ABI class: X.Org Video Driver, version 4.1 My problem is that if I use xrandr to turn the screen 180 degrees and try to display flash or movies the video part flickers alot making it unusable. The application I am running is an AdobeAir - that displays videos. The same thing running on the same machine with Windows XP works ok with the 180 degree rotated screen. I looked at the CPU usage - rotated an not rotated and it seems the same. The only other problem might be in Adobe Air. Tell me if you neeed xorg.xonf or any other info. sincerely Adrian