Messages in this thread | | | From | Bartlomiej Zolnierkiewicz <> | Subject | vanilla kernels hang randomly under Fedora 10 on system with Radeon card | Date | Mon, 1 Dec 2008 23:42:32 +0100 |
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Hi,
After Fedora 9 -> Fedora 10 upgrade vanilla kernels which previously worked fine (next-20081128 and next-20081121) started to hang randomly on my Pentium M / 855PM / RV350 laptop. Since (surprisingly) stock Fedora kernel (2.6.27.5-117.fc10.i686) was not affected I got the idea that either userspace changes uncovered some kernel regression or some Fedora specific patch must be fixing the issue. Unfortunately vanilla 2.6.27 also freezed so after the usual pain caused by hitting bunch of unrelated problems [1] it turned out that drm-modesetting-radeon.patch is the magic patch and CONFIG_DRM_RADEON_KMS is the magic change. With the patch and enabling the option next-20081128 works stable again...
Since the following error gets logged by kernel:
[drm:drm_buffer_object_validate] *ERROR* Failed moving buffer. cef578c0 1444 4000027 10000a0 [drm:drm_buffer_object_validate] *ERROR* Out of aperture space or DRM memory quota.
and it also seems that system is more responsive now (it was kind of sluggish previously) my draft theory is that F9 -> F10 triggered some AGP memory management bug and CONFIG_DRM_RADEON_KMS happens to fix it but I'll leave figuring this up to the more knowledgeable people... ;)
Thanks, Bart
PS1 full dmesg, config and lspci outputs are here: http://www.kernel.org/pub/linux/kernel/people/bart/f9_to_f10_grind/
PS2 drm set mode reporting looks quite weird sometimes, i.e.:
... [drm] LVDS-8: set mode �Տ�� d [drm] bios LVDS_GEN_CNTL: 0x30ff24 ...
[1] some Fedora patches make quilt trip (quilt push applies whole patch but quilt pop only removes a part of it) since they aggregate multiple changes to a single file, execshield patch causes oops with my kernel config and depmod run for a Fedora kernel config's build triggered OOM kill (512M on this machine and yes, I was happily running without swap) -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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