Description of problem: kernels newer than -4.7.7-200.fc24.i686 wont boot on IBM T30 laptop Version-Release number of selected component (if applicable): kernel-4.7.9-200.fc24.i686 How reproducible: 100% Steps to Reproduce: 1. dnf update 2. get kernel-4.7.9-200.fc24.i686 3. Try to reboot - fails. Actual results: Blinking cursor - forever Expected results: Boot new kernel correctly Additional info: My trusty old IBM T30 laptop will no longer boot with the latest kernel-4.7.9-200.fc24.i686 kernel-4.8.4-200.fc24.i686 kernel-PAE-4.8.4-200.fc24.i686 It will still boot kernel-4.7.7-200.fc24.i686 The grub2 menu is displayed, and after selecting the 4.7.7-200 kernel there's a 2-3 sec delay with blinking cursor, then I'm prompted for the encryption passphrase for the /home filesystem. Then the voluminous messages (from removing the rhgb boot option) scroll forth and bootup proceeds normally. However, If I choose any of the newer kernels, the blinking cursor remains forever; no prompt for the encryption passphrase occurs; the keyboard is totally non-responsive. Power cycling is required to recover. Obviously, there are no log files or other data... Things I've tried: - dnf remove <the "bad" kernel>, and reinstall it. - Rebuild initramfs-4.8.4-200.fc24.i686.img with dracut. The new file is only one byte bigger, probably due to a different date, and still won't boot. - Added the secret 'dis_ucode_ldr' boot option, as revealed in https://www.reddit.com/r/Fedora/comments/4qrl1k/kernel_46_wont_boot_how_can_i_troubleshoot/ but this seemed aimed at newer IBM laptops, and indeed, had no effect on my T30. - Updated the BIOS. The T30 has two components: the BIOS and the EC (Embedded Controller). My BIOS was up to date at version 2.10 but the EC was v. 1.03, while v. 1.07 was available. Sadly, updating to EC v. 1.07 did not alleviate the problem. Any thoughts, shared experience, commiserations, suggestions? What can be so different about these newer kernels?
This problem has gone away as mysteriously as it arrived. Today's weekly dnf update brought kernel-4.8.6-201.fc24.i686+PAE kernel-4.8.6-201.fc24.i686 Both, I am happy to say, boot correctly on my IBM T30 laptop, unlike the previous -4.8.4-200.fc24.i688 versions. My thanks to whomever found and fixed this bug.
*********** MASS BUG UPDATE ************** We apologize for the inconvenience. There are a large number of bugs to go through and several of them have gone stale. Due to this, we are doing a mass bug update across all of the Fedora 24 kernel bugs. Fedora 25 has now been rebased to 4.10.9-100.fc24. Please test this kernel update (or newer) and let us know if you issue has been resolved or if it is still present with the newer kernel. If you have moved on to Fedora 26, and are still experiencing this issue, please change the version to Fedora 26. If you experience different issues, please open a new bug report for those.
*********** MASS BUG UPDATE ************** This bug is being closed with INSUFFICIENT_DATA as there has not been a response in 2 weeks. If you are still experiencing this issue, please reopen and attach the relevant data from the latest kernel you are running and any data that might have been requested previously.