The CUPS bug was rejected as Ghostscript did not actually produce correct DSC-conforming PostScript in the PDF-to-PostScript conversion by the pdftops (either my script or the filter of CUPS 1.4 which will come with Jaunty's CUPS package).
The Ghostscript upstream developers have accepted a last-minute fix for this into Ghostscript 8.64 today (GS is already in code freeze), so Jaunty will ship the tray switching on multiple-page-size documents already working.
If you want to test, please test with Jaunty and wait for the next CUPS and GS uploads.
The CUPS bug was rejected as Ghostscript did not actually produce correct DSC-conforming PostScript in the PDF-to-PostScript conversion by the pdftops (either my script or the filter of CUPS 1.4 which will come with Jaunty's CUPS package).
The Ghostscript upstream developers have accepted a last-minute fix for this into Ghostscript 8.64 today (GS is already in code freeze), so Jaunty will ship the tray switching on multiple-page-size documents already working.
If you want to test, please test with Jaunty and wait for the next CUPS and GS uploads.