Date: Tue, 27 Aug 2019 14:12:41 +0000 From: andrew glaeser <bugs@irregulaire.info> To: x11@FreeBSD.org Subject: Fw: FreebSD12 xorg with -AMDGPU- RADEON Message-ID: <20190827141241.096e2a45@a68n.lokal>
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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Some more measures were taken: * power-supply replaced with a more recent efficient one * 8 cm, 5 V case-fan replaced with PWM-regulated 12 cm fan * extra air-inlets drilled into the case-lid, does not really matter, if you have found the computer-case on the trash-yard, I know, kind of ridiculous, 100% hand-made, even freehand drilled * thermal grease renewed below CPU-cooler * CPU-fan replaced with a more performant new fan So, since all possible sources of failure have been ruled out, that irq-18 kept reappearing because of a too high surrounding air-temperature. We have another heat-wave here in Berlin currently, today or tomorrow is the peak around 35° C. This means irq-18 appears over 30°C temperature already at boot-time and it will not go away, regardless of fan-configuration, unless you lower CPU-core clock. This is a complex problem. For instance today, about one hour ago I had to lower the CPU-clock to 1.7 GHz (with no core-boost) instead of the nominal 3.6 GHz in order to get rid of irq-18 throttling. Obviously this has a severe impact on system-performance, so next time, when I upgrade the system to current DDR4 RAM, I am going to go for a 35 W A-series APU, this box had 65 W of nominal TDP, but without the graphics-card, with CPU-graphics only. Begin forwarded message: Date: Thu, 15 Aug 2019 13:23:12 +0200 From: andrew glaeser <bugs@irregulaire.info> To: freebsd-x11@freebsd.org, debian-x@lists.debian.org, memberservices@amd-member.com Subject: Re: Fw: FreebSD12 xorg with -AMDGPU- RADEON - -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 I struggled for some more days with system-stability with Radeon 6450 card: * extra 8 cm case-fan installed, see jpg-attachment * memory-frequency limited to 1300 (instead of 1600 MHz auto-mode), * PCB-CPU-turbo disabled, * AMD memory-profile enabled, * finally # echo 'radeon.pcie_gen2="0"' >> /boot/loader.conf I do hope I have a stable system now, see attached [dmesg.tx.xz] - -----BEGIN PGP SIGNATURE----- iF0EARECAB0WIQTF9uNaslvnJpWt8kXn6sEfJS3nCwUCXVVAoAAKCRDn6sEfJS3n Cwx6AKCnZSdnPAS0HmcvfBO20cCmZN6FSQCgiK0pycX4zgtlDcPwqJd5bZ2oNV4= =7DzJ - -----END PGP SIGNATURE----- -----BEGIN PGP SIGNATURE----- iF0EARECAB0WIQTF9uNaslvnJpWt8kXn6sEfJS3nCwUCXWU6WgAKCRDn6sEfJS3n C90rAJ4/Pn1Cx5Q6LkWLOsVsx40tlT+KcACfSdD9ozoDl9LjmcLvwr9q/NCtoEg= =Mmvb -----END PGP SIGNATURE-----
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