Hello list,
I read about the changes regarding the mtrr code in the upcoming 2.6.20
kernel and so today I tried rc7.
Since quite some time I had warning messages like
mtrr... overlaps existing...
whenever I started up Xorg with DRI enabled. This doesn't happen anymore
with 2.6.20-rc7.
But now /proc/mtrr shows 256MB of video ram, same as lspci, whereas the
real amount of video ram (as properly detected by X) is only 128MB.
I have a Radeon 9250 from Connect3d with AGP, DVI, VGA, TV-Out and
128bit memory bus width.
I'm wondering if this misdetection could become an issue.
cat /proc/mtrr
reg00: base=0x00000000 ( 0MB), size= 512MB: write-back, count=1
reg01: base=0xe0000000 (3584MB), size= 128MB: write-combining, count=2
reg02: base=0xd0000000 (3328MB), size= 256MB: write-combining, count=3
The lines are RAM, AGP Aperture Size and video ram.
grep -i videoram /var/log/Xorg.0.log
(--) RADEON(0): Mapped VideoRAM: 131072 kByte (128 bit DDR SDRAM)
lspci -vvv
...
02:00.0 VGA compatible controller: ATI Technologies Inc RV280 [Radeon
9200 PRO] (rev 01) (prog-if 00 [VGA])
Subsystem: Connect Components Ltd Unknown device 2801
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 16
Region 0: Memory at d0000000 (32-bit, prefetchable) [size=256M]
Region 1: I/O ports at d000 [size=256]
Region 2: Memory at e9000000 (32-bit, non-prefetchable)
[size=64K]
[virtual] Expansion ROM at e8000000 [disabled] [size=128K]
Capabilities: [58] AGP version 3.0
Status: RQ=256 Iso- ArqSz=0 Cal=0 SBA+ ITACoh- GART64-
HTrans- 64bit- FW+ AGP3+ Rate=x4,x8
Command: RQ=32 ArqSz=2 Cal=0 SBA+ AGP+ GART64- 64bit-
FW- Rate=x8
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-
dmesg shows:
...
radeonfb: Found Intel x86 BIOS ROM Image
radeonfb: Retrieved PLL infos from BIOS
radeonfb: Reference=27.00 MHz (RefDiv=12) Memory=240.00 Mhz,
System=166.00 MHz
radeonfb: PLL min 20000 max 40000
radeonfb: Monitor 1 type DFP found
radeonfb: EDID probed
radeonfb: Monitor 2 type no found
radeonfb: Dynamic Clock Power Management enabled
Console: switching to colour frame buffer device 160x64
radeonfb (0000:02:00.0): ATI Radeon Y`
...
agpgart: Found an AGP 3.0 compliant device at 0000:00:00.0.
agpgart: Putting AGP V3 device at 0000:00:00.0 into 8x mode
agpgart: Putting AGP V3 device at 0000:02:00.0 into 8x mode
[drm] Setting GART location based on new memory map
[drm] Loading R200 Microcode
[drm] writeback test succeeded in 1 usecs
agpgart: Found an AGP 3.0 compliant device at 0000:00:00.0.
agpgart: Putting AGP V3 device at 0000:00:00.0 into 8x mode
agpgart: Putting AGP V3 device at 0000:02:00.0 into 8x mode
[drm] Loading R200 Microcode
/usr/src/linux/scripts/ver_linux
If some fields are empty or look unusual you may have an old version.
Compare to the current minimal requirements in Documentation/Changes.
Linux section_eight 2.6.20-rc7 #2 Wed Jan 31 20:23:30 CET 2007 i686 AMD
Sempron(tm) 2400+ AuthenticAMD GNU/Linux
Gnu C 4.1.1
Gnu make 3.81
binutils 2.16.1
util-linux 2.12r
mount 2.12r
module-init-tools 3.2.2
e2fsprogs 1.39
Linux C Library > libc.2.4
Dynamic linker (ldd) 2.4
Procps 3.2.6
Net-tools 1.60
Kbd 1.12
Sh-utils 6.4
udev 103
Modules Loaded lirc_serial lirc_dev snd_ice1712
snd_ice17xx_ak4xxx snd_ak4xxx_adda snd_cs8427 snd_ac97_codec snd_pcm
snd_page_alloc ac97_bus snd_i2c snd_mpu401_uart snd_rawmidi dvb_ttpci
saa7146_vv video_buf saa7146 ttpci_eeprom stv0299 dvb_core
Regards
Sebastian
Sebastian Kemper wrote:
>
> But now /proc/mtrr shows 256MB of video ram, same as lspci, whereas the
> real amount of video ram (as properly detected by X) is only 128MB.
>
The size of the aperture doesn't have to match the actual amount of
memory. For many cards it doesn't.
-hpa
On Thursday 01 February 2007 07:13, you wrote:
> Sebastian Kemper wrote:
> > But now /proc/mtrr shows 256MB of video ram, same as lspci, whereas
> > the real amount of video ram (as properly detected by X) is only
> > 128MB.
>
> The size of the aperture doesn't have to match the actual amount of
> memory. For many cards it doesn't.
>
> -hpa
Hello Peter,
sorry, I don't understand. Are you talking about the AGP Aperture size
that I can set in my BIOS or about the actual video ram on the graphics
card. Because that's the one that the mtrr sets to its double size.
Regards
Sebastian
Sebastian Kemper wrote:
> On Thursday 01 February 2007 07:13, you wrote:
>> Sebastian Kemper wrote:
>>> But now /proc/mtrr shows 256MB of video ram, same as lspci, whereas
>>> the real amount of video ram (as properly detected by X) is only
>>> 128MB.
>> The size of the aperture doesn't have to match the actual amount of
>> memory. For many cards it doesn't.
>>
>> -hpa
>
> Hello Peter,
>
> sorry, I don't understand. Are you talking about the AGP Aperture size
> that I can set in my BIOS or about the actual video ram on the graphics
> card. Because that's the one that the mtrr sets to its double size.
Neither. I'm talking about the window in the address space, as shown in
/proc/pci.
-hpa