Messages in this thread |  | | Date | Tue, 27 Nov 2001 11:48:35 +0100 | From | Didier Moens <> | Subject | Re: [Fwd: Re: OOPS in agpgart (2.4.13, 2.4.15pre7)] |
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Nicolas Aspert wrote:
> >> >> >> To sum up : this is an IBM A30p, with an "external" Radeon Mobility LY >> (32 MB), and an 830MP instead of an 830M. The 830MP is common for both >> IBM A30 and A30p models. >> >> > > OK ! so you _do_ have an external graphic card (that's what looked > unclear to me), > for which AGP should work in the same way it does for other Intel > chipsets... > > So why not trying the little patch I attach below, which should make > your stuff work, without breaking too much the i830 support for on-board > adapters... The patch is for 2.4.16, but is likely to be applied easily > on another recent kernel. Keep me informed...
1. modprobe agpgart loads OK :
Nov 27 11:34:47 localhost kernel: Linux agpgart interface v0.99 (c) Jeff Hartmann Nov 27 11:34:47 localhost kernel: agpgart: Maximum main memory to use for agp memory: 439M Nov 27 11:34:47 localhost kernel: agpgart: Detected an Intel 830M, but could not find the secondary device. Nov 27 11:34:47 localhost kernel: agpgart: Trying the Intel 830MP stuff Nov 27 11:34:47 localhost kernel: agpgart: Detected Intel i830M chipset Nov 27 11:34:47 localhost kernel: agpgart: AGP aperture is 256M @ 0xd0000000
[root@localhost agp]# /home/didier/repository/kernel/testgart version: 0.99 bridge id: 0x35758086 agp_mode: 0x1f000217 aper_base: 0xd0000000 aper_size: 256 pg_total: 112384 pg_system: 112384 pg_used: 0 entry.key : 0 entry.key : 1 Allocated 8 megs of GART memory MemoryBenchmark: 858 mb/s MemoryBenchmark: 876 mb/s MemoryBenchmark: 890 mb/s Average speed: 874 mb/s Testing data integrity (1st pass): passed on first pass. Testing data integrity (2nd pass): passed on second pass.
2. compared to Stephan's original patches ("if i830m_dev ..." and "break;") :
Nov 27 11:37:07 localhost kernel: Linux agpgart interface v0.99 (c) Jeff Hartmann Nov 27 11:37:07 localhost kernel: agpgart: Maximum main memory to use for agp memory: 439M Nov 27 11:37:07 localhost kernel: agpgart: Detected Intel i830M chipset Nov 27 11:37:07 localhost kernel: agpgart: AGP aperture is 256M @ 0xd0000000
[root@localhost agp]# /home/didier/repository/kernel/testgart version: 0.99 bridge id: 0x35758086 agp_mode: 0x1f000217 aper_base: 0xd0000000 aper_size: 256 pg_total: 112384 pg_system: 112384 pg_used: 0 entry.key : 0 entry.key : 1 Allocated 8 megs of GART memory MemoryBenchmark: 859 mb/s MemoryBenchmark: 887 mb/s MemoryBenchmark: 876 mb/s Average speed: 874 mb/s Testing data integrity (1st pass): passed on first pass. Testing data integrity (2nd pass): passed on second pass.
Is the 8 megs of GART OK ? Is the memory benchmark comparable to equally equipped machines (1.2G P-III(M), i830(MP), ATI Radeon(M)) ? (I'm trying to differentiate my performance problem between agpgart and X DRI/DRM).
Kind regards,
Didier
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