Issue #121 has been updated by Anastasios Koutian.
Anastasios Koutian wrote in #note-86:
Martin Zwicknagl wrote in #note-46:
Hello,
I can report, that I had NO freezes for a month now.
During a RAM upgrade to 16GB I have replaced one 2GB Samsung SODIMM (2GB 1Rx8 PC3-10600s-09-10-ZZZ, M471B5773CHS-CH9 1149) with a SODIMM [Crucial CT102464BF160B 8GB Speicher (DDR3L, 1600 MT/s, PC3L-12800, SODIMM, 204-Pin)]. The laptop is now using two identical Crucial SODIMMs.
The problem is gone. I do not need any ``intel_idle.max_cstate`` tricks anymore. My T520 is using all cores, hyperthreading, all cstates (and turbo boost).
I think ticket 178 is also solved. Who can close 178?
Cheeers Martin
Hello all,
I installed the exact same SODIMMs (Crucial CT102464BF160B) as the message quoted above and achieved four days continuous uptime with no issues. I eventually had to reboot due to a necessary update, so it might be a premature conclusion. I will keep the system running for as long as I can to confirm.
I haven't gotten around to comparing with MSRs on stock firmware yet, but will once I have spare time.
After testing for two weeks, it became clear that the problem is still present, but with different symptoms: the system freezes for a short time and then reboots. Previously, it would freeze indefinitely.
---------------------------------------- Bug #121: T520: Hangs in OS https://ticket.coreboot.org/issues/121#change-1794
* Author: Firstname Lastname * Status: In Progress * Priority: Normal * Category: chipset configuration * Start date: 2017-06-09 * Affected hardware: SNB, IVY * Affected OS: - ---------------------------------------- I have been running coreboot since 2017.04.15 and have experienced hangs ever since then. It was suggested by folk on the IRC that I run memtest to check for incorrect raminit causing errors, however I have run memtest for 12 hours straight with no errors.
Due to the ambiguous nature of the hangs (immediate freeze with no warning signs, audio gets stuck repeating the last 50ms or so of noise, not sure what this effect is called) I don't have much useful information other than the .config and dmesg. However one thing I can say with high confidence is that the hangs occur significantly more frequently in Linux (*buntu distros) than Windows 10. Within an hour of launching Linux a hang is likely, whereas Windows typically runs for many hours before a hang occurs. I considered this an insignificant anecdotal anomaly at first but over the course of the nearly 2 months I have been running coreboot it seems to be a solid trend. The hangs occur anywhere, typically during mere desktop usage or basic web browsing.
Additionally there is another form of hang I experience where the screen goes black except for some sort of graphical corruption down the left side (http://i.imgur.com/4zWrlpX.jpg), whether this is related to the more common total freeze hangs I don't know but I figured I should include it nonetheless. These hangs only occur about 1:20 compared to the regular hangs.
---Files-------------------------------- config (20.7 KB) dmesg.txt (57.3 KB) cbmem-raminit.txt (62 KB) lspci.txt (29.6 KB) cpuinfo.txt (3.94 KB) defconfig (1023 Bytes) defconfig (699 Bytes)