Ubuntu
xserver-xorg-video-intel package

  1. Bug #314928
  2. Comment #9

Comment 9 for bug 314928

Revision history for this message
Jose Bernardo (bernardo-bandos) wrote : Re: [i915GM] MTRR entry missing since jaunty - is this intentional?

On my aspire one 110L running jaunty (freshly updated) this doesn't work:
# echo "base=0x60000000 size=0x10000000 type=write-combining" > /proc/mtrr
bash: echo: erro de escrita: Dispositivo sem espaço livre

(which is the translation for "write error:device full", I think)

lspci -vvnn:
00:02.0 VGA compatible controller [0300]: Intel Corporation Mobile 945GME Express Integrated Graphics Controller [8086:27ae] (rev 03)
        Subsystem: Acer Incorporated [ALI] Device [1025:015b]
        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 16
        Region 0: Memory at 78480000 (32-bit, non-prefetchable) [size=512K]
        Region 1: I/O ports at 60c0 [size=8]
        Region 2: Memory at 60000000 (32-bit, prefetchable) [size=256M]
        Region 3: Memory at 78500000 (32-bit, non-prefetchable) [size=256K]
        Capabilities: [90] Message Signalled Interrupts: Mask- 64bit- Queue=0/0 Enable-
                Address: 00000000 Data: 0000
        Capabilities: [d0] 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-
        Kernel modules: intelfb

cat /proc/mtrr:
reg00: base=0x0fffe0000 ( 4095MB), size= 128KB, count=1: write-protect
reg01: base=0x0fffc0000 ( 4095MB), size= 128KB, count=1: uncachable
reg02: base=0x000000000 ( 0MB), size= 1024MB, count=1: write-back
reg03: base=0x040000000 ( 1024MB), size= 512MB, count=1: write-back
reg04: base=0x05f800000 ( 1528MB), size= 8MB, count=1: uncachable
reg05: base=0x05f600000 ( 1526MB), size= 2MB, count=1: uncachable
reg06: base=0x05f500000 ( 1525MB), size= 1MB, count=1: uncachable
reg07: base=0x000000000 ( 0MB), size= 128KB, count=1: uncachable

and from Xorg.0.log:
(--) PCI:*(0@0:2:0) Intel Corporation Mobile 945GME Express Integrated Graphics Controller rev 3, Mem @ 0x78480000/524288, 0x60000000/268435456, 0x78500000/262144, I/O @ 0x000060c0/8
[...]
(II) intel(0): Integrated Graphics Chipset: Intel(R) 945GME
(--) intel(0): Chipset: "945GME"
(--) intel(0): Linear framebuffer at 0x60000000
(--) intel(0): IO registers at addr 0x78480000
(WW) intel(0): libpciaccess reported 0 rom size, guessing 64kB
(==) intel(0): Using EXA for acceleration