** Description changed: - Steps: - 1. Installed system and log in. - 2. Do something on M715q-RR-1 or let it idle - 3. Verify the system once per 10 minutes + [Impact] + On the machine of Lenovo M715, there is an AMD GPU (1022:15dd rev ca), when it + switchs to amdgpufb, the system will hang randomlly, sometimes it hangs during + boot, reboot or poweroff, sometimes it hangs with longtime standby. - Actual result: - System got hang during working. + + [Fix] + Through bisecting, I found this patch can fix the problem, looks like without + this patch the ATOM BIOS can't be parsed correctlly. + + + [Test Case] + Did the test of "boot, reboot and poweroff" 5 times, worked very well. + Let the system standby over one night, worked very well. + + [Regression Potential] + Very low, I tested this patch on at least 6 differnt lenovo machines + and those machines have different AMD GPUs on them, all of them worked + as well as before.
-- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1796789 Title: the machine of lenovo M715 with the AMD GPU (Radeon Vega 8 Mobile, rev ca, 1002:15dd) often hangs randomly Status in HWE Next: New Status in linux package in Ubuntu: Incomplete Bug description: [Impact] On the machine of Lenovo M715, there is an AMD GPU (1022:15dd rev ca), when it switchs to amdgpufb, the system will hang randomlly, sometimes it hangs during boot, reboot or poweroff, sometimes it hangs with longtime standby. [Fix] Through bisecting, I found this patch can fix the problem, looks like without this patch the ATOM BIOS can't be parsed correctlly. [Test Case] Did the test of "boot, reboot and poweroff" 5 times, worked very well. Let the system standby over one night, worked very well. [Regression Potential] Very low, I tested this patch on at least 6 differnt lenovo machines and those machines have different AMD GPUs on them, all of them worked as well as before. To manage notifications about this bug go to: https://bugs.launchpad.net/hwe-next/+bug/1796789/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
