Bug 1310532 - VNC server sends repeated frames when DRI3 is enabled
VNC server sends repeated frames when DRI3 is enabled
Product: Fedora
Classification: Fedora
Component: xorg-x11-drv-intel (Show other bugs)
Unspecified Unspecified
unspecified Severity unspecified
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Assigned To: Adam Jackson
Fedora Extras Quality Assurance
Depends On:
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Reported: 2016-02-22 02:25 EST by Jonathan Dieter
Modified: 2016-12-20 13:55 EST (History)
2 users (show)

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Fixed In Version:
Doc Type: Bug Fix
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Last Closed: 2016-12-20 13:55:28 EST
Type: Bug
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Attachments (Terms of Use)
Xorg log (18.61 KB, text/plain)
2016-02-22 02:28 EST, Jonathan Dieter
no flags Details

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Description Jonathan Dieter 2016-02-22 02:25:42 EST
Description of problem:
The VNC server sends the same three frames when DRI3 is enabled on integrated 1st(?)-gen Intel HD Graphics card.  This happens for both x11vnc and x0vncserver.

Version-Release number of selected component (if applicable):
xorg-x11-drv-intel-2.99.917-20.20160119.fc23.x86_64 [1]

How reproducible:

Steps to Reproduce:
1. Run x11vnc
2. Connect to system using vnc client

Actual results:
Same three frames are repeated in VNC client

Expected results:
VNC client should show what's actually on the screen

Additional info:
This doesn't happen on newer systems running Intel HD Graphics 2500, so it seems to be something specific to this particular integrated chipset.  As a temporary workaround, I've downgraded the system to xorg-x11-drv-intel-2.99.917-16.20150729.fc23.x86_64, which doesn't have DRI3 enabled, and it works fine.

Also, FWIW, the login screen (under LightDM) works just fine.  The frames don't start repeating until gnome-shell actually launches.

[1] rebuilt from koji because we have other systems running the same disk image that require DRI3 for hardware acceleration when multiple video cards are in use.
Comment 1 Jonathan Dieter 2016-02-22 02:28 EST
Created attachment 1129168 [details]
Xorg log
Comment 2 Fedora End Of Life 2016-11-24 10:41:10 EST
This message is a reminder that Fedora 23 is nearing its end of life.
Approximately 4 (four) weeks from now Fedora will stop maintaining
and issuing updates for Fedora 23. It is Fedora's policy to close all
bug reports from releases that are no longer maintained. At that time
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of '23'.

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Comment 3 Fedora End Of Life 2016-12-20 13:55:28 EST
Fedora 23 changed to end-of-life (EOL) status on 2016-12-20. Fedora 23 is
no longer maintained, which means that it will not receive any further
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