Altough I couldn't get desktop-effects to run at first (due to
_unrelated_ Bug #123712 and Bug #123712), I managed to get it to start
after:
-- manually changing xorg.conf DefaultDepth to 16 (it's a pitty
displayconfig-gtk doesn't allow to change bitdepth);
-- unloading and loading radeon module (sudo rmmod radeon && sudo modprobe
radeon);
-- using `SKIP_CHECKS compiz --replace`;
but I got the same symptoms as the original reporter.
PLEASE NOTE THAT THIS IS A REGRESSION! Compiz worked flawlessly at 16bpp
in Feisty (with glxinfo -l reporting the same (1024) MAX_TEXTURE_SIZE).
My card is an ATI Radeon M7 (Radeon 7500):
#output of sudo lspci -vv includes:
01:00.0 VGA compatible controller: ATI Technologies Inc Radeon Mobility M7 LW
[Radeon Mobility 7500] (prog-if 00 [VGA])
Subsystem: ASUSTeK Computer Inc. Mobility Radeon M7 (L3C/S)
Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr-
Stepping+ SERR- FastB2B-
Status: Cap+ 66MHz+ UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort-
<TAbort- <MAbort- >SERR- <PERR-
Latency: 64 (2000ns min), Cache Line Size: 32 bytes
Interrupt: pin A routed to IRQ 5
Region 0: Memory at d8000000 (32-bit, prefetchable) [size=128M]
Region 1: I/O ports at d800 [size=256]
Region 2: Memory at d7000000 (32-bit, non-prefetchable) [size=64K]
Expansion ROM at d7fe0000 [disabled] [size=128K]
Capabilities: [58] AGP version 2.0
Status: RQ=48 Iso- ArqSz=0 Cal=0 SBA+ ITACoh- GART64- HTrans-
64bit- FW- AGP3- Rate=x1,x2,x4
Command: RQ=32 ArqSz=0 Cal=0 SBA+ AGP+ GART64- 64bit- FW-
Rate=x4
Capabilities: [50] Power Management version 2
Flags: PMEClk- DSI- D1+ D2+ AuxCurrent=0mA
PME(D0-,D1-,D2-,D3hot-,D3cold-)
Status: D0 PME-Enable- DSel=0 DScale=0 PME-
--
defects in some parts of the screen
https://bugs.launchpad.net/bugs/150058
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