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Hi, After six days the final solution has been: Edit /etc/default/grub and insert at the end of the parameter "GRUB_CMDLINE_LINUX_DEFAULT" after that: sudo update-grub I don't know if there are a better solution but it's working now. Thanks again to @Lord Boltar for his interest.

Hello again, At the end only radeon.dpm=0 or only radeon.runpm=0 not work, but with both yes ... at the moment :-) I will try with this configuration same days and if all work properly I'll reply it. This is the result of the last one: Thanks for all @Lord Boltar!

I think that i solve the problem. At the beginning i try with "amdgpu.dpm=0". I find in this thread https://bugzilla.kernel.org/show_bug.cgi?id=51381 a similar problem detected from the kernel 3.15 and above. At the moment with the parameter "radeon.dpm=0" i have reboot correctly three times...

Hello, TLP is not installed. I have add "blacklist radeon" and after that the screen go black BUT the monitor not go to power saver, i can go to other tty and i could confirm that the radeon has been blacklisted. The problem persist :-(. Them, i delete "blacklist radeon" from...

For this command the output is empty: But for this: This has been the case 2 that i have talked before. 70 seconds from the first ERROR and after that all ok .. ¿?. Thanks in advance

Hello, thank you and congratulations to this forum that has solved many problems for me. On this occasion I have not been able to find a solution anywhere, not even outside here. I have an Asrok A790GHX with internal graphics. I recently bought a SHAPPIRE Radeon HD 6450 graphics card. I...