Hi,
As far as I can see, the ubuntu package repository has only been updated for the Amd64 architecture, leaving out the i386 one. For instance, the i386 flavour of the indi-bin package refers to a 2018-12-19 compilation date, while the Amd64 is timestamped as 2019-02-27. Does it mean that i386 is no longer supported ?

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From the i386 package list :
Package: indi-bin
Source: libindi
Priority: optional
Section: misc
Installed-Size: 4816
Maintainer: Jasem Mutlaq <This email address is being protected from spambots. You need JavaScript enabled to view it.>
Architecture: i386
Version: 1.7.6~201812191815~ubuntu18.04.1
Depends: libc6 (>= 2.17), libcurl3-gnutls (>= 7.16.2), libgcc1 (>= 1:4.2), libindi1, libnova-0.16-0, libstdc++6 (>= 6), libusb-1.0-0 (>= 2:1.0.9), zlib1g (>= 1:1.1.4), libindi-data (>= 1.7.6~201812191815~ubuntu18.04.1)
Filename: pool/main/libi/libindi/indi-bin_1.7.6~201812191815~ubuntu18.04.1_i386.deb
Size: 960884
MD5sum: 43570a1ee39d96659b9c1369c1b30a9d
SHA1: d94fadefecbfb9a0742d3b7e29fc5c0e3a667ca1
SHA256: 71b872cc9e4180f13558c395d649f69579bfeae32f8dbb380b394af024540578
Description: INDI server, drivers and tools
Description-md5: db0e8f43df68cc93bef3aa45ef531342

From the Amd64 package list :
Package: indi-dbg
Source: libindi
Priority: extra
Section: debug
Installed-Size: 39579
Maintainer: Jasem Mutlaq <This email address is being protected from spambots. You need JavaScript enabled to view it.>
Architecture: amd64
Version: 1.7.6~201902271636~ubuntu18.04.1
Suggests: indi-bin (= 1.7.6~201902271636~ubuntu18.04.1)
Depends: libindi1 (= 1.7.6~201902271636~ubuntu18.04.1)
Filename: pool/main/libi/libindi/indi-dbg_1.7.6~201902271636~ubuntu18.04.1_amd64.deb
Size: 7698144
MD5sum: 710506f9460c79c4117d14f7c2ba6345
SHA1: 78f285a37a711b95b5bf79dba34372fed160f4b1
SHA256: 95d937b16d45546d3fe984b97797cd33f5fccafff3e37930c7f0e82e8abea44f
Description: Instrument-Neutral Device Interface library -- debug symbols
Description-md5: 2a5fcded4df96788f83cf38fa3b4b672