Ditto on the above comments.

Bug still exists in Lenovo Y400.

Triggered by running mplayer/Kmplayer, but all other video apps will be affected.

ceefour> lspci -vv
00:00.0 Host bridge: Intel Corporation Mobile 945GM/PM/GMS/940GML and 945GT Express Memory Controller Hub (rev 03)
        Subsystem: Lenovo Unknown device 3800
        Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR+ FastB2B-
        Status: Cap+ 66MHz- UDF- FastB2B+ ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort+ >SERR- <PERR-
        Latency: 0
        Capabilities: <access denied>

00:02.0 VGA compatible controller: Intel Corporation Mobile 945GM/GMS/940GML Express Integrated Graphics Controller (rev 03) (prog-if 00 [VGA])
        Subsystem: Lenovo Unknown device 3801
        Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B-
        Status: Cap+ 66MHz- UDF- FastB2B+ ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR-
        Latency: 0
        Interrupt: pin A routed to IRQ 17
        Region 0: Memory at d4200000 (32-bit, non-prefetchable) [size=512K]
        Region 1: I/O ports at 1800 [size=8]
        Region 2: Memory at c0000000 (32-bit, prefetchable) [size=256M]
        Region 3: Memory at d4300000 (32-bit, non-prefetchable) [size=256K]
        Capabilities: <access denied>

00:02.1 Display controller: Intel Corporation Mobile 945GM/GMS/940GML Express Integrated Graphics Controller (rev 03)
        Subsystem: Lenovo Unknown device 3801
        Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B-
        Status: Cap+ 66MHz- UDF- FastB2B+ ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR-
        Latency: 0
        Region 0: Memory at d4280000 (32-bit, non-prefetchable) [size=512K]
        Capabilities: <access denied>

00:1b.0 Audio device: Intel Corporation 82801G (ICH7 Family) High Definition Audio Controller (rev 02)
        Subsystem: Lenovo Unknown device 3802
        Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B-
        Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR-
        Latency: 0, Cache Line Size: 64 bytes
        Interrupt: pin A routed to IRQ 21
        Region 0: Memory at d4340000 (64-bit, non-prefetchable) [size=16K]
        Capabilities: <access denied>

00:1c.0 PCI bridge: Intel Corporation 82801G (ICH7 Family) PCI Express Port 1 (rev 02) (prog-if 00 [Normal decode])
        Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B-
        Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR-
        Latency: 0, Cache Line Size: 64 bytes
        Bus: primary=00, secondary=02, subordinate=02, sec-latency=0
        I/O behind bridge: 00002000-00002fff
        Memory behind bridge: d2000000-d3ffffff
        Prefetchable memory behind bridge: 00000000d0000000-00000000d1ffffff
        Secondary status: 66MHz- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- <SERR- <PERR-
        BridgeCtl: Parity- SERR- NoISA+ VGA- MAbort- >Reset- FastB2B-
        Capabilities: <access denied>

00:1c.1 PCI bridge: Intel Corporation 82801G (ICH7 Family) PCI Express Port 2 (rev 02) (prog-if 00 [Normal decode])
        Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B-
        Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR-
        Latency: 0, Cache Line Size: 64 bytes
        Bus: primary=00, secondary=03, subordinate=03, sec-latency=0
        Memory behind bridge: d4000000-d40fffff
        Secondary status: 66MHz- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort+ <SERR- <PERR-
        BridgeCtl: Parity- SERR- NoISA+ VGA- MAbort- >Reset- FastB2B-
        Capabilities: <access denied>

00:1d.0 USB Controller: Intel Corporation 82801G (ICH7 Family) USB UHCI #1 (rev 02) (prog-if 00 [UHCI])
        Subsystem: Lenovo Unknown device 3807
        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: 0
        Interrupt: pin A routed to IRQ 18
        Region 4: I/O ports at 1820 [size=32]

00:1d.1 USB Controller: Intel Corporation 82801G (ICH7 Family) USB UHCI #2 (rev 02) (prog-if 00 [UHCI])
        Subsystem: Lenovo Unknown device 3808
        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: 0
        Interrupt: pin B routed to IRQ 16
        Region 4: I/O ports at 1840 [size=32]

00:1d.2 USB Controller: Intel Corporation 82801G (ICH7 Family) USB UHCI #3 (rev 02) (prog-if 00 [UHCI])
        Subsystem: Lenovo Unknown device 3809
        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: 0
        Interrupt: pin C routed to IRQ 19
        Region 4: I/O ports at 1860 [size=32]

00:1d.3 USB Controller: Intel Corporation 82801G (ICH7 Family) USB UHCI #4 (rev 02) (prog-if 00 [UHCI])
        Subsystem: Lenovo Unknown device 380a
        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: 0
        Interrupt: pin D routed to IRQ 17
        Region 4: I/O ports at 1880 [size=32]

00:1d.7 USB Controller: Intel Corporation 82801G (ICH7 Family) USB2 EHCI Controller (rev 02) (prog-if 20 [EHCI])
        Subsystem: Lenovo Unknown device 380b
        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: 0
        Interrupt: pin A routed to IRQ 18
        Region 0: Memory at d4544000 (32-bit, non-prefetchable) [size=1K]
        Capabilities: <access denied>

00:1e.0 PCI bridge: Intel Corporation 82801 Mobile PCI Bridge (rev e2) (prog-if 01 [Subtractive decode])
        Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B-
        Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR-
        Latency: 0
        Bus: primary=00, secondary=05, subordinate=09, sec-latency=32
        I/O behind bridge: 00003000-00003fff
        Memory behind bridge: d4100000-d41fffff
        Prefetchable memory behind bridge: 0000000050000000-0000000053ffffff
        Secondary status: 66MHz- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort+ <SERR- <PERR-
        BridgeCtl: Parity- SERR- NoISA- VGA- MAbort- >Reset- FastB2B-
        Capabilities: <access denied>

00:1f.0 ISA bridge: Intel Corporation 82801GBM (ICH7-M) LPC Interface Bridge (rev 02)
        Subsystem: Lenovo Unknown device 380d
        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: 0
        Capabilities: <access denied>

00:1f.2 IDE interface: Intel Corporation 82801GBM/GHM (ICH7 Family) Serial ATA Storage Controller IDE (rev 02) (prog-if 80 [Master])
        Subsystem: Lenovo Unknown device 3835
        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: 0
        Interrupt: pin B routed to IRQ 16
        Region 0: I/O ports at 01f0 [size=8]
        Region 1: I/O ports at 03f4 [size=1]
        Region 2: I/O ports at 0170 [size=8]
        Region 3: I/O ports at 0374 [size=1]
        Region 4: I/O ports at 18b0 [size=16]
        Capabilities: <access denied>

00:1f.3 SMBus: Intel Corporation 82801G (ICH7 Family) SMBus Controller (rev 02)
        Subsystem: Lenovo Unknown device 380f
        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-
        Interrupt: pin B routed to IRQ 10
        Region 4: I/O ports at 18c0 [size=32]

03:00.0 Network controller: Intel Corporation PRO/Wireless 3945ABG Network Connection (rev 02)
        Subsystem: Intel Corporation Unknown device 1000
        Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B-
        Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR-
        Latency: 0, Cache Line Size: 64 bytes
        Interrupt: pin A routed to IRQ 22
        Region 0: Memory at d4000000 (32-bit, non-prefetchable) [size=4K]
        Capabilities: <access denied>

05:01.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL-8139/8139C/8139C+ (rev 10)
        Subsystem: Lenovo Unknown device 3827
        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 (8000ns min, 16000ns max)
        Interrupt: pin A routed to IRQ 20
        Region 0: I/O ports at 3000 [size=256]
        Region 1: Memory at d4100000 (32-bit, non-prefetchable) [size=256]
        Capabilities: <access denied>

05:04.0 CardBus bridge: ENE Technology Inc CB1410 Cardbus Controller (rev 01)
        Subsystem: Lenovo Unknown device 3828
        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: 168, Cache Line Size: 128 bytes
        Interrupt: pin A routed to IRQ 17
        Region 0: Memory at d4102000 (32-bit, non-prefetchable) [size=4K]
        Bus: primary=05, secondary=06, subordinate=09, sec-latency=176
        Memory window 0: 50000000-53fff000 (prefetchable)
        Memory window 1: 54000000-57fff000
        I/O window 0: 00003400-000034ff
        I/O window 1: 00003800-000038ff
        BridgeCtl: Parity- SERR- ISA- VGA- MAbort- >Reset+ 16bInt+ PostWrite+
        16-bit legacy interface ports at 0001

05:06.0 FireWire (IEEE 1394): Ricoh Co Ltd Unknown device 0832 (prog-if 10 [OHCI])
        Subsystem: Lenovo Unknown device 3829
        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 (500ns min, 1000ns max)
        Interrupt: pin A routed to IRQ 21
        Region 0: Memory at d4100800 (32-bit, non-prefetchable) [size=2K]
        Capabilities: <access denied>

05:06.1 Generic system peripheral [0805]: Ricoh Co Ltd R5C822 SD/SDIO/MMC/MS/MSPro Host Adapter (rev 19)
        Subsystem: Lenovo Unknown device 382a
        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
        Interrupt: pin A routed to IRQ 21
        Region 0: Memory at d4100400 (32-bit, non-prefetchable) [size=256]
        Capabilities: <access denied>

05:06.2 System peripheral: Ricoh Co Ltd Unknown device 0843 (rev 01)
        Subsystem: Lenovo Unknown device 382b
        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-
        Interrupt: pin B routed to IRQ 5
        Region 0: Memory at d4101000 (32-bit, non-prefetchable) [disabled] [size=256]
        Capabilities: <access denied>

05:06.3 System peripheral: Ricoh Co Ltd R5C592 Memory Stick Bus Host Adapter (rev 0a)
        Subsystem: Lenovo Unknown device 382c
        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-
        Interrupt: pin B routed to IRQ 5
        Region 0: Memory at d4101400 (32-bit, non-prefetchable) [disabled] [size=256]
        Capabilities: <access denied>

ceefour> xvattr
Found Xv 2.2
Adaptor: 0
Name: Intel(R) Video Overlay
 Port: 73
  Name: XV_COLORKEY
   Flags: XvGettable XvSettable
   Min value: 0
   Max value: 16777215
   Current value: 66046
  Name: XV_BRIGHTNESS
   Flags: XvGettable XvSettable
   Min value: -128
   Max value: 127
   Current value: 0
  Name: XV_CONTRAST
   Flags: XvGettable XvSettable
   Min value: 0
   Max value: 255
   Current value: 64
  Name: XV_DOUBLE_BUFFER
   Flags: XvGettable XvSettable
   Min value: 0
   Max value: 1
   Current value: 1
  Name: XV_PIPE
   Flags: XvGettable XvSettable
   Min value: 0
   Max value: 1
   Current value: 1
  Name: XV_GAMMA0
   Flags: XvGettable XvSettable
   Min value: 0
   Max value: 16777215
   Current value: 526344
  Name: XV_GAMMA1
   Flags: XvGettable XvSettable
   Min value: 0
   Max value: 16777215
   Current value: 1052688
  Name: XV_GAMMA2
   Flags: XvGettable XvSettable
   Min value: 0
   Max value: 16777215
   Current value: 2105376
  Name: XV_GAMMA3
   Flags: XvGettable XvSettable
   Min value: 0
   Max value: 16777215
   Current value: 4210752
  Name: XV_GAMMA4
   Flags: XvGettable XvSettable
   Min value: 0
   Max value: 16777215
   Current value: 8421504
  Name: XV_GAMMA5
   Flags: XvGettable XvSettable
   Min value: 0
   Max value: 16777215
   Current value: 12632256
Adaptor: 1
Name: Intel(R) Textured Video
 Port: 74
  Name: XV_BRIGHTNESS
   Flags: XvGettable XvSettable
   Min value: -128
   Max value: 127
   Current value: 0
  Name: XV_CONTRAST
   Flags: XvGettable XvSettable
   Min value: 0
   Max value: 255
   Current value: 0
 Port: 75
  Name: XV_BRIGHTNESS
   Flags: XvGettable XvSettable
   Min value: -128
   Max value: 127
   Current value: 0
  Name: XV_CONTRAST
   Flags: XvGettable XvSettable
   Min value: 0
   Max value: 255
   Current value: 0
 Port: 76
  Name: XV_BRIGHTNESS
   Flags: XvGettable XvSettable
   Min value: -128
   Max value: 127
   Current value: 0
  Name: XV_CONTRAST
   Flags: XvGettable XvSettable
   Min value: 0
   Max value: 255
   Current value: 0
 Port: 77
  Name: XV_BRIGHTNESS
   Flags: XvGettable XvSettable
   Min value: -128
   Max value: 127
   Current value: 0
  Name: XV_CONTRAST
   Flags: XvGettable XvSettable
   Min value: 0
   Max value: 255
   Current value: 0
 Port: 78
  Name: XV_BRIGHTNESS
   Flags: XvGettable XvSettable
   Min value: -128
   Max value: 127
   Current value: 0
  Name: XV_CONTRAST
   Flags: XvGettable XvSettable
   Min value: 0
   Max value: 255
   Current value: 0
 Port: 79
  Name: XV_BRIGHTNESS
   Flags: XvGettable XvSettable
   Min value: -128
   Max value: 127
   Current value: 0
  Name: XV_CONTRAST
   Flags: XvGettable XvSettable
   Min value: 0
   Max value: 255
   Current value: 0
 Port: 80
  Name: XV_BRIGHTNESS
   Flags: XvGettable XvSettable
   Min value: -128
   Max value: 127
   Current value: 0
  Name: XV_CONTRAST
   Flags: XvGettable XvSettable
   Min value: 0
   Max value: 255
   Current value: 0
 Port: 81
  Name: XV_BRIGHTNESS
   Flags: XvGettable XvSettable
   Min value: -128
   Max value: 127
   Current value: 0
  Name: XV_CONTRAST
   Flags: XvGettable XvSettable
   Min value: 0
   Max value: 255
   Current value: 0
 Port: 82
  Name: XV_BRIGHTNESS
   Flags: XvGettable XvSettable
   Min value: -128
   Max value: 127
   Current value: 0
  Name: XV_CONTRAST
   Flags: XvGettable XvSettable
   Min value: 0
   Max value: 255
   Current value: 0
 Port: 83
  Name: XV_BRIGHTNESS
   Flags: XvGettable XvSettable
   Min value: -128
   Max value: 127
   Current value: 0
  Name: XV_CONTRAST
   Flags: XvGettable XvSettable
   Min value: 0
   Max value: 255
   Current value: 0
 Port: 84
  Name: XV_BRIGHTNESS
   Flags: XvGettable XvSettable
   Min value: -128
   Max value: 127
   Current value: 0
  Name: XV_CONTRAST
   Flags: XvGettable XvSettable
   Min value: 0
   Max value: 255
   Current value: 0
 Port: 85
  Name: XV_BRIGHTNESS
   Flags: XvGettable XvSettable
   Min value: -128
   Max value: 127
   Current value: 0
  Name: XV_CONTRAST
   Flags: XvGettable XvSettable
   Min value: 0
   Max value: 255
   Current value: 0
 Port: 86
  Name: XV_BRIGHTNESS
   Flags: XvGettable XvSettable
   Min value: -128
   Max value: 127
   Current value: 0
  Name: XV_CONTRAST
   Flags: XvGettable XvSettable
   Min value: 0
   Max value: 255
   Current value: 0
 Port: 87
  Name: XV_BRIGHTNESS
   Flags: XvGettable XvSettable
   Min value: -128
   Max value: 127
   Current value: 0
  Name: XV_CONTRAST
   Flags: XvGettable XvSettable
   Min value: 0
   Max value: 255
   Current value: 0
 Port: 88
  Name: XV_BRIGHTNESS
   Flags: XvGettable XvSettable
   Min value: -128
   Max value: 127
   Current value: 0
  Name: XV_CONTRAST
   Flags: XvGettable XvSettable
   Min value: 0
   Max value: 255
   Current value: 0
 Port: 89
  Name: XV_BRIGHTNESS
   Flags: XvGettable XvSettable
   Min value: -128
   Max value: 127
   Current value: 0
  Name: XV_CONTRAST
   Flags: XvGettable XvSettable
   Min value: 0
   Max value: 255
   Current value: 0
ceefour> uname -a
Linux ojalanow 2.6.20-16-generic #2 SMP Fri Aug 31 00:55:27 UTC 2007 i686 GNU/Linux
ceefour>