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I went through this several months back with a Ryzen and F27. Here
are some links: https://community.amd.com/thread/225795 https://bugzilla.kernel.org/show_bug.cgi?id=196683 I wound up using ZenStates to fix the problem: https://github.com/r4m0n/ZenStates-Linux This service turns off C6 upon booting. /etc/systemd/system/zenstates-no-c6.service: [Unit] Description=Turn off power saving C6 state [Service] Type=oneshot StandardOutput=syslog ExecStart=/usr/bin/python /usr/local/src/ZenStates-Linux-master/zenstates.py --c6-disable [Install] WantedBy=basic.target Bill On 9/14/2018 12:16 AM, D&R wrote:
On Thu, 13 Sep 2018 18:24:42 +0100 lejeczek via users <users@xxxxxxxxxxxxxxxxxxxxxxx> wrote:hi guys I wonder, I cannot boot Fedora without - amd_iommu=off - that's the first issue. You guys? I'm on Lenovo Ideapad E485 with AMD Ryzen 5 2500U & F28.I had a problem with a Ryzen 3 or 5 and I emailed AMD about it. The fix was to disable C6 state. Has worked with no problems since. DavidSecond issue is - I use external monitor (via HDMI in "join" setup) and if system went to sleep or HDMI got disconnect then laptop's display would show something that I do not think many of you might have seen, unless you are middle-aged at least - it's noise of that kind like in old days tube TVs would show when signal was lost. It looks very funny but also so very wrong :) But when displays both are okey, and when I lock gnome(@Wayland) session and unlock/login again then both screens would be ... kind of blinking, infrequently. Reboot is needed to get rid of blinking. I've tried kernels up to 4.18.5-200.fc28.x86_64 Care to share your thoughts? many thanks, L. _______________________________________________ users mailing list -- users@xxxxxxxxxxxxxxxxxxxxxxx To unsubscribe send an email to users-leave@xxxxxxxxxxxxxxxxxxxxxxx Fedora Code of Conduct: https://getfedora.org/code-of-conduct.html List Guidelines: https://fedoraproject.org/wiki/Mailing_list_guidelines List Archives: https://lists.fedoraproject.org/archives/list/users@xxxxxxxxxxxxxxxxxxxxxxx_______________________________________________ users mailing list -- users@xxxxxxxxxxxxxxxxxxxxxxx To unsubscribe send an email to users-leave@xxxxxxxxxxxxxxxxxxxxxxx Fedora Code of Conduct: https://getfedora.org/code-of-conduct.html List Guidelines: https://fedoraproject.org/wiki/Mailing_list_guidelines List Archives: https://lists.fedoraproject.org/archives/list/users@xxxxxxxxxxxxxxxxxxxxxxx |
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