Public bug reported: I've seen this on two systems: Xubuntu on dual Xeons, and Ubuntu on an I-7.
When I choose "advanced options" -> "recovery mode" in Grub, and then "root shell prompt" in the resulting booted system, I cannot expect it to be functional for long. I can do a few things, but even if I do nothing, it can break in a way that takes it back to the place where I selected "root shell prompt" but it is completely unresponsive to the keyboard or mouse. Or nearly so. I can get a reboot with the three-finger-salute. Usually. Even without that, I've been interrupted by status messages garbling the screen and other stuff I'd love to suppress. At least usually, I would. I'd like some control. When I'm already fighting system problems, this is even more annoying than usual, but it happens on healthy systems too. ProblemType: Bug DistroRelease: Ubuntu 16.04 Package: systemd 229-4ubuntu16 ProcVersionSignature: Ubuntu 4.4.0-70.91-generic 4.4.49 Uname: Linux 4.4.0-70-generic x86_64 ApportVersion: 2.20.1-0ubuntu2.5 Architecture: amd64 Date: Tue Mar 28 14:05:22 2017 ExecutablePath: /lib/systemd/systemd InstallationDate: Installed on 2016-11-24 (124 days ago) InstallationMedia: Ubuntu 16.04.1 LTS "Xenial Xerus" - Release amd64 (20160719) MachineType: System76, Inc. Silverback WS ProcEnviron: TERM=linux PATH=(custom, no user) ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.4.0-70-generic root=UUID=c4f3d485-bc7a-4456-8d8c-44ce35b619dc ro quiet splash clocksource=tsc vt.handoff=7 SourcePackage: systemd SystemdDelta: [EXTENDED] /etc/systemd/system/display-manager.service → /lib/systemd/system/display-manager.service.d/xdiagnose.conf [EXTENDED] /lib/systemd/system/systemd-timesyncd.service → /lib/systemd/system/systemd-timesyncd.service.d/disable-with-time-daemon.conf [EXTENDED] /lib/systemd/system/rc-local.service → /lib/systemd/system/rc-local.service.d/debian.conf 3 overridden configuration files found. UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 04/28/2016 dmi.bios.vendor: American Megatrends Inc. dmi.bios.version: 3204 dmi.board.asset.tag: To be filled by O.E.M. dmi.board.name: Z10PE-D16 WS dmi.board.vendor: ASUSTeK COMPUTER INC. dmi.board.version: Rev 1.xx dmi.chassis.asset.tag: To Be Filled By O.E.M. dmi.chassis.type: 17 dmi.chassis.vendor: System76, Inc. dmi.chassis.version: Desktop dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr3204:bd04/28/2016:svnSystem76,Inc.:pnSilverbackWS:pvrsilw2:rvnASUSTeKCOMPUTERINC.:rnZ10PE-D16WS:rvrRev1.xx:cvnSystem76,Inc.:ct17:cvrDesktop: dmi.product.name: Silverback WS dmi.product.version: silw2 dmi.sys.vendor: System76, Inc. ** Affects: systemd (Ubuntu) Importance: Undecided Status: New ** Tags: amd64 apport-bug xenial -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to systemd in Ubuntu. https://bugs.launchpad.net/bugs/1677042 Title: Grub recovery boot root prompt is unstable Status in systemd package in Ubuntu: New Bug description: I've seen this on two systems: Xubuntu on dual Xeons, and Ubuntu on an I-7. When I choose "advanced options" -> "recovery mode" in Grub, and then "root shell prompt" in the resulting booted system, I cannot expect it to be functional for long. I can do a few things, but even if I do nothing, it can break in a way that takes it back to the place where I selected "root shell prompt" but it is completely unresponsive to the keyboard or mouse. Or nearly so. I can get a reboot with the three-finger-salute. Usually. Even without that, I've been interrupted by status messages garbling the screen and other stuff I'd love to suppress. At least usually, I would. I'd like some control. When I'm already fighting system problems, this is even more annoying than usual, but it happens on healthy systems too. ProblemType: Bug DistroRelease: Ubuntu 16.04 Package: systemd 229-4ubuntu16 ProcVersionSignature: Ubuntu 4.4.0-70.91-generic 4.4.49 Uname: Linux 4.4.0-70-generic x86_64 ApportVersion: 2.20.1-0ubuntu2.5 Architecture: amd64 Date: Tue Mar 28 14:05:22 2017 ExecutablePath: /lib/systemd/systemd InstallationDate: Installed on 2016-11-24 (124 days ago) InstallationMedia: Ubuntu 16.04.1 LTS "Xenial Xerus" - Release amd64 (20160719) MachineType: System76, Inc. Silverback WS ProcEnviron: TERM=linux PATH=(custom, no user) ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.4.0-70-generic root=UUID=c4f3d485-bc7a-4456-8d8c-44ce35b619dc ro quiet splash clocksource=tsc vt.handoff=7 SourcePackage: systemd SystemdDelta: [EXTENDED] /etc/systemd/system/display-manager.service → /lib/systemd/system/display-manager.service.d/xdiagnose.conf [EXTENDED] /lib/systemd/system/systemd-timesyncd.service → /lib/systemd/system/systemd-timesyncd.service.d/disable-with-time-daemon.conf [EXTENDED] /lib/systemd/system/rc-local.service → /lib/systemd/system/rc-local.service.d/debian.conf 3 overridden configuration files found. UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 04/28/2016 dmi.bios.vendor: American Megatrends Inc. dmi.bios.version: 3204 dmi.board.asset.tag: To be filled by O.E.M. dmi.board.name: Z10PE-D16 WS dmi.board.vendor: ASUSTeK COMPUTER INC. dmi.board.version: Rev 1.xx dmi.chassis.asset.tag: To Be Filled By O.E.M. dmi.chassis.type: 17 dmi.chassis.vendor: System76, Inc. dmi.chassis.version: Desktop dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr3204:bd04/28/2016:svnSystem76,Inc.:pnSilverbackWS:pvrsilw2:rvnASUSTeKCOMPUTERINC.:rnZ10PE-D16WS:rvrRev1.xx:cvnSystem76,Inc.:ct17:cvrDesktop: dmi.product.name: Silverback WS dmi.product.version: silw2 dmi.sys.vendor: System76, Inc. 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