To be explicit. We would like to obtain a system log with graphics debugging enabled, after reproducing the problem. We believe the following steps should achieve that:
1) reboot, interrupt grub, and add "drm.debug=6" to the kernel command line. There is a good guide on how to do this at the URL below, see the section "Temporarily Add a Kernel Boot Parameter for Testing":
To be explicit. We would like to obtain a system log with graphics debugging enabled, after reproducing the problem. We believe the following steps should achieve that:
1) reboot, interrupt grub, and add "drm.debug=6" to the kernel command line. There is a good guide on how to do this at the URL below, see the section "Temporarily Add a Kernel Boot Parameter for Testing":
https:/ /wiki.ubuntu. com/Kernel/ KernelBootParam eters
2) reproduce the issue
3) hit ctrl-alt-F1 to get the text login, and then hit the power button which should trigger a clean reboot.
4) boot normally, login and attach the files /var/log/dmesg, /var/log/dmesg.0 and /var/log/syslog.
Hope that makes sense.