1. Launch Orca.
2. If you are using a laptop, open Orca Preferences and set it to "Keyboard Layout" > "Laptop".
3. In Ubuntu Software Center, navigate to "Get Software" > "Universal Access".
4. Arrow down to "Easystroke Gesture Recognition".
5. If on a laptop, press Caps Lock + Enter; otherwise press Enter on the numeric keypad twice.
What you should hear:
4. "Cellwriter. Charmap. Dasher. Easystroke Gesture Recognition."
5. "Easystroke Gesture Recognition. Control your desktop using mouse gestures (2 stars from 3 reviews)."
What you actually hear:
4. "Icon column header. Image. Image. Image. Image."
5. "Table. Apps. Column. Cell. Image. Column 2 of 2 row 4 of 14."
<https://wiki.ubuntu.com/SoftwareCenter#software-list-view>: "In a list view ... The row’s accessible name should be the item’s title, and its accessible description should be the item’s summary."
<https://wiki.ubuntu.com/SoftwareCenter#get-software-list-view>: "In addition, text of the form “ (X stars from Y reviews)” should be present at the end of the item’s accessible description — for example, “An application for managing botanical collections (4 stars from 3 reviews)”."
http://accessibility.freestandards.org/~gk4/a11y/atkguide/atkguide.html#htmlcat_ibmgapguidegtkatk.html__Toc412398981
I thought this might be because the icon was the only element in the first column for each row, and Orca was reading just that first cell when a row was selected. But Orca Preferences has a "Table Rows" option that is set to "Speak row" by default. And *regardless* of that setting, Orca reads both the checkbox and the title+summary for each listed update in Update Manager. So there must be something else that's preventing the title, summary, and buttons from bubbling up to ATK in USC in particular.