http://bugzilla.opensuse.org/show_bug.cgi?id=1168776 http://bugzilla.opensuse.org/show_bug.cgi?id=1168776#c7 --- Comment #7 from Achim Gratz <Stromeko@NexGo.DE> --- I updated my other Tumbleweed machine to 5.6.0 today (it's also a Haswell, but only an i3-4130 and FullHD display). Here the FBC is not on by default: # cat /sys/kernel/debug/dri/0/i915_gem_objects 255 shrinkable [0 free] objects, 139313152 bytes system: total:0x00000001e85dd000, available:0x00000001e85dd000 bytes stolen: total:0x0000000002000000, available:0x0000000002000000 bytes # cat /sys/kernel/debug/dri/0/i915_fbc_status FBC disabled: disabled at runtime per module param I can manually switch it on via module parameter in sysfs interface: # cat /sys/kernel/debug/dri/0/i915_fbc_status FBC enabled Compressing: yes No messages about "reducing compressed framebuffer size". # lspci -vv -s 00:02.0 00:02.0 VGA compatible controller: Intel Corporation 4th Generation Core Processor Family Integrated Graphics Controller (rev 06) (prog-if 00 [VGA controller]) DeviceName: Onboard IGD Subsystem: ASUSTeK Computer Inc. Device 8534 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 29 Region 0: Memory at f7800000 (64-bit, non-prefetchable) [size=4M] Region 2: Memory at e0000000 (64-bit, prefetchable) [size=256M] Region 4: I/O ports at f000 [size=64] [virtual] Expansion ROM at 000c0000 [disabled] [size=128K] Capabilities: [90] MSI: Enable+ Count=1/1 Maskable- 64bit- Address: fee04004 Data: 4026 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- Kernel driver in use: i915 Kernel modules: i915 -- You are receiving this mail because: You are on the CC list for the bug.