Comment 29 for bug 1161962

Have you tried holding down the battery to power it down? Did this start happening after enabling Rapid Start while keeping the TPM and Smart Connect both disabled?

In my tests, having Rapid Start enabled but Smart Connect disabled and the TPM fully disabled result in Rapid Start functionality working properly with Ubuntu on all versions of the XPS 13 (L321X and both the HD and FHD versions of L322X). For the L322X, there is no option in the firmware setup to set the Rapid Start timer, but the default I found was 30 minutes.