After several rounds of error and trial with JTAG debugging, it turned out this may be related to the page table being corrupted during hibernation resume. With explicit 'resume=/dev/sda5' in kernel command line, the resume happens earlier as the kernel is still running as swapper (or idle) process, and the page table is placed somewhere safe (PHYS == 0x0000_4000 if you are interested), and the content will not be overwritten during the RAM content restoration. While resume triggered by initramfs, it's actually running a user space program (i.e. /bin/resume from klibc-utils), with the page table for this specific process being potentially overwritten. This apparently affects all ARM variants, and we need a patch to avoid such overwrite.
-- [dove] hibernation failed to resume https://bugs.launchpad.net/bugs/509006 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
