This occurs for me on a system that had been upgraded from 17.04 to 17.10. I've now upgraded it to 18.04 pre-release and Disks's restore function is working again. It does seem to use a lot of CPU, however, but I haven't compare it with another system very scientifically.
-- You received this bug notification because you are a member of Desktop Packages, which is subscribed to gnome-disk-utility in Ubuntu. https://bugs.launchpad.net/bugs/1721669 Title: Restore Disk Image stuck at 0% using 100% of CPU, then Disks crashed when I closed its window Status in gnome-disk-utility package in Ubuntu: Confirmed Bug description: I was attempting to use "Restore Disk Image" to write an Ubuntu MATE iso to flash drive. The task stalled at 0%, and htop showed Disks using 100% CPU. I cancelled the task and clicked the window close button, and then Disks crashed. ProblemType: Crash DistroRelease: Ubuntu 17.10 Package: gnome-disk-utility 3.26.1-0ubuntu1 ProcVersionSignature: Ubuntu 4.13.0-12.13-generic 4.13.3 Uname: Linux 4.13.0-12-generic x86_64 NonfreeKernelModules: wl ApportVersion: 2.20.7-0ubuntu2 Architecture: amd64 AssertionMessage: *** Error in `/usr/bin/gnome-disks': free(): invalid pointer: 0x000055b9230dfd0f *** CurrentDesktop: MATE Date: Thu Oct 5 18:34:19 2017 ExecutablePath: /usr/bin/gnome-disks InstallationDate: Installed on 2016-11-22 (317 days ago) InstallationMedia: Ubuntu-MATE 16.10 "Yakkety Yak" - Release amd64 (20161012.1) ProcCmdline: /usr/bin/gnome-disks Signal: 6 SourcePackage: gnome-disk-utility StacktraceTop: __libc_message (action=action@entry=do_abort, fmt=fmt@entry=0x7fe72f8b2408 "*** Error in `%s': %s: 0x%s ***\n") at ../sysdeps/posix/libc_fatal.c:181 malloc_printerr (action=<optimized out>, str=0x7fe72f8aed8e "free(): invalid pointer", ptr=<optimized out>, ar_ptr=<optimized out>) at malloc.c:5423 _int_free (av=0x7fe72fae4c20 <main_arena>, p=<optimized out>, have_lock=0) at malloc.c:4172 __GI___libc_free (mem=<optimized out>) at malloc.c:3142 () at /usr/lib/x86_64-linux-gnu/libcairo.so.2 Title: gnome-disks assert failure: *** Error in `/usr/bin/gnome-disks': free(): invalid pointer: 0x000055b9230dfd0f *** UpgradeStatus: Upgraded to artful on 2017-10-04 (1 days ago) UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-disk-utility/+bug/1721669/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : firstname.lastname@example.org Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp