which appears in all terminals.
Start a 1080p video. e.g. Note that the video is not run from an encrypted folder.
Or watch a video on youtube.
Usage on all four CPUs on my DELL XPS 13 DEVELOPER EDITION will be between 30% and 100%.
Expected same 3D performance as on Thrusty.
Meaning this was introduced some time between those two version.
This also happens in "utopic".
I also tried using the Kernel 3.17.1 from the kernel-ppa and the latest xserver from xorg-edgers ppa and I can see the same problem.
Same issue on a Dell Latitude D6510. In Utopic and Trusty. I have seen this from more than a half year ago.
If I lock my screen, sometimes there is no password field to unlock it. If I go back to the terminal (Ctrl-Alt-F1), then that message is showing up.
When I switch back to my locked screen (Ctrl-Alt-F7) I have a password field and I can unlock my screen.
I have done a reinstall (on 2014-11-15) to Trusty, because Utopic does not work very well on this laptop. Issues with video playing and editing and slow keyboard performance (autotype in Keepassx is too fast and characters are not typed in the right order; in Google Chome typing is sometimes impossible; mssh is not working).
Getting the same error with Chromebook Pixel on all terminals occasionally.
Not sure if there are any other related symptoms. 3D and video works fine, although with 3D the system will start getting warm and kicking up the fans. I haven't done enough testing to know if this is typical with this laptop and that level of 3D processing though.
Runing 14.10 and MATE 1.8.1.
I was just able to reproduce it by previewing a 3D screensaver (Molecule). After clicking Leave Fullscreen X crashes with this as the error message on screen. Killing the session (ctrl-alt-backspace) will recover responsiveness and allows me to log back in.
Since using kernel 3.19 (http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.19-vivid/), the problem is gone. Battery consumption down, general responsiveness up. Finally!
I've near searched to the end of Google to find a solution. One of my observations is that the symptoms of other bugs never matches the symptoms of this bug. On my laptop, everything seems to be OK—that is, until I run some thing requiring 3D. Then my machine grinds to a halt. No logs, no nothing. 100% on all four cores.
So, I'm thinking, what is _something_ is misbehaving, but the system believes everything to be OK? The answer to that, it seems, is cpu frequency scaling.
My CPU cores are scaled using the 'powersave' governance. Using Half Life 2 as a benchmark (this game ran well on trusty, but currently is not playable after 1.5 minutes), I looked at what happened to cpu frequencies while playing the game. At first, all four cores jumped to 3GHz . Then, surprisingly, they were lowered to ~130 MHz .
So, setting my cpu frequency scaling governance to 'performance' partly fixes this issue.
I had the same issue on Dell Latitude E6510 and utopic. Upgrading to vivid solved the issue (3.19 kernel).
Jonas G. Drange, thank you for reporting this bug to Ubuntu. Utopic reached EOL on July 23, 2015.
If this is reproducible in a supported release, please file a new report.
I have the message "[drm:intel_dp_start_link_train] *ERROR* too many full retries, give up" on my Ubuntu 12.04.5 LTS with Intel i7-3537U CPU and 3.13 kernel from Trusty HWE.
Forgot to mention - I have these results on Asustek UX32A laptop.