[GLES] [USE_MODERN_COMPIZ_GL] Screen goes black if unityshell is loaded and vertex_buffer_object=OFF

Bug #1036568 reported by Daniel van Vugt on 2012-08-14
This bug affects 1 person
Affects Status Importance Assigned to Milestone
Fix Released
Daniel van Vugt
unity (Ubuntu)

Bug Description

In the new GLES code, the opengl plugin has a new option "vertex_buffer_object" which is enabled by default. It is optional and rendering works perfectly with or without it.

However with unityshell loaded, it is no longer optional. Disabling vertex_buffer_object makes windows darken quickly until the whole screen is black. And I can't get it back without resetting my compiz settings externally.

Related branches

Changed in unity:
assignee: Daniel van Vugt (vanvugt) → nobody
Daniel van Vugt (vanvugt) wrote :

Promoted to High. This bug will be a big issue for fglrx users at least until bug 1026920 is fixed or worked around in lp:compiz.

Changed in unity:
importance: Medium → High
Sam Spilsbury (smspillaz) wrote :

Hmm, not really.

Unity and nux have a hard requirement on vertex buffer objects. It doesn't make sense to be testing codepaths where they are available in unity and not available in compiz. In addition, the users of unity will be using the distro patched compiz which have the detection workaround applied (or we could put that upstream)

Daniel van Vugt (vanvugt) wrote :

I don't understand why Unity/Nux need a hard requirement on the opengl plugin's vertex_buffer_object option. Because GLVertexBuffer works transparently with or without it, at least for all other plugins.

Daniel van Vugt (vanvugt) wrote :

I might be wrong about fglrx. However I just spent half an hour installing an ATI card and fglrx, only to find I can't test it. Stuck on bug 1025098 instead.

Daniel van Vugt (vanvugt) wrote :

This bug could just be a problem in enableLegacyOBSAndRender, which I already know is buggy in the gles2 branch.

description: updated
Daniel van Vugt (vanvugt) wrote :

This appears to be fixed by the fix for bug 1037408. Fingers crossed.

Changed in unity:
assignee: nobody → Daniel van Vugt (vanvugt)
status: Triaged → In Progress
Daniel van Vugt (vanvugt) wrote :

Fix committed into lp:unity at revision 2594

Changed in unity:
status: In Progress → Fix Committed
Changed in unity (Ubuntu):
status: New → Fix Committed
Launchpad Janitor (janitor) wrote :
Download full text (5.5 KiB)

This bug was fixed in the package unity - 6.4.0-0ubuntu1

unity (6.4.0-0ubuntu1) quantal-proposed; urgency=low

  [ Łukasz 'sil2100' Zemczak ]
  * New upstream release.
    - Software Center add to launcher icon animation is delayed when the
      launcher is in auto-hide mode (LP: #1012896)
    - Home lens: Applications show up in Music category (LP: #1040101)
    - WARN unity.hud.hud Hud.cpp:185 Attempted to close the hud connection
      without starting it (LP: #1039451)
    - Text field textures do not update when maximum width changes.
      (LP: #1037187)
    - An application is closed if manually removed from favorites on gsettings
      (LP: #1032157)
    - The switcher (Alt+Tab) is showing incorrect windows after using Deskop
      Wall (Ctrl+alt+<direction>) (LP: #1031959)
    - Dragging icons to reorder -away from launcher causes the dragged icon
      image edges to fade away(cut off) (LP: #1026247)
    - Screen flickers when changing launcher icon size. (LP: #1024113)
    - Arrow for indicating lenses points empty space on alt+F2 (LP: #998752)
    - [previews] Music album tracks do not have a scroll-bar when needed.
      (LP: #1039462)
    - [USE_MODERN_COMPIZ_GL] With unity scrollbar support enabled, hotplugging
      monitors doesn't work (LP: #1039410)
    - [previews] Track titles aren't escaped (LP: #1039020)
    - Launcher - Edge of tiles (with backlight disabled) is too opaque
      (LP: #1038138)
    - [USE_MODERN_COMPIZ_GL] Benchmark window appears behind the Unity shell
      now (LP: #1036609)
    - [GLES] [USE_MODERN_COMPIZ_GL] Unity shell (Launcher and Panel) are
      missing if framebuffer_object is disabled (LP: #1036569)
    - [USE_MODERN_COMPIZ_GL] Benchmark window is mostly invisible, shrunken
      and displaced (LP: #1036528)
    - Unity quicklist menu items leak memory (LP: #1036338)
    - Icon resized between 32 - 48 - 64 look jaggy (LP: #1036231)
    - [Regression] Hideous low-res icon when using the HUD with autohide
      enabled. (LP: #1035951)
    - [regression] Selecting an item of the BFB quicklist when the dash is
      open, causes it to hide (LP: #1035641)
    - Launcher - Switch on "backlight toggles" mode by default (LP: #1033866)
    - Unity spends 15% of time in PlacesGroup::ComputeContentSize when opening
      dash (LP: #1033306)
    - Launcher dragged icon is not redrawn when the mouse pointer is not moved
      (LP: #1032700)
    - Bottom - Up key navigation is broken in dash filterbar (LP: #1028810)
    - Launcher - SD card can not be ejected by drag-n-dropping to trash
      (LP: #960910)
    - Alt-tab - The app name in the integrated menu should not change during
      Alt-tab switching (LP: #950782)
    - Dash - If only one Category Header is displayed, it should be
      automatically expanded (LP: #950710)
    - Launcher - Unity mouse wheel scroll too small (LP: #906072)
    - boot moves desktop icons (LP: #886667)
    - Alt-tab - Reduce the spread delay for all items other than the initial
      item the select lands on after alt-tab opens (LP: #838232)
    - Launcher - Launcher should never autohide when the cursor is positioned
      over the Launcher (e.g. When ...


Changed in unity (Ubuntu):
status: Fix Committed → Fix Released
Changed in unity:
status: Fix Committed → Fix Released
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