[Bug 1793765] [NEW] Ubuntu 16.04.5 i386 installer crashes as client for VirtualBox 5.2.16 on Windows 7 32bit

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Summary: Ubuntu 16.04.5 i386 installer crashes as client for VirtualBox
5.2.16 on Windows 7 32bit

Host: Windows 7 Enterprise 32 bit (remote controlled via RDP)
VirtualBox: 5.2.16
Client: Ubuntu Linux 16.04.5

when the installer is running suddenly the screen turns to "colorful" text mode with random chars.
selection of text-mode install is not possible due to lack of text-mode support.
maybe some opcode is not supported or a privileged command is executed.

excerpt from virtualbox log:

00:00:20.634666 Changing the VM state from 'RUNNING' to 'GURU_MEDITATION'
00:00:20.634717 Console: Machine state changed to 'GuruMeditation'
00:00:20.634913 !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
00:00:20.634914 !!
00:00:20.634915 !!         VCPU0: Guru Meditation -2403 (VERR_TRPM_DONT_PANIC)
00:00:20.634941 !!
00:00:20.634971 !! TRAP=0e ERRCD=0000000000000000 CR2=00000000ffa03004 EIP=fdd6ecd0 Type=0 cbInstr=ff
00:00:20.634995 !! EIP in VMMRC.rc (fdd6d000) at rva 1cd0 near symbols:
00:00:20.634996 !!    fdd6ec20 rva 00001c20 off 000000b0  selmGuestLDTWriteHandler
00:00:20.634998 !!    fdd6eec0 rva 00001ec0 off -000001f0 selmRCGuestTSSWritePfHandler
00:00:20.635030 !! fff8:fdd6ecd0 8b 07                   mov eax, dword [edi]
00:00:20.635033 !!
00:00:20.635034 !!
00:00:20.635034 !!

** Affects: ubiquity (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: bot-comment
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Ubuntu 16.04.5 i386 installer crashes as client for VirtualBox 5.2.16 on Windows 7 32bit
https://bugs.launchpad.net/bugs/1793765
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