Disabling hardware acceleration at all while keeping libvdpau1 would be the best short-term solution, IMHO.
Unfortunately it's impossible to do so via the settings menu, since it's not possible to uncheck "Enable Hardware Acceleration".
I've found the relevant setting to be into ~/.macromedia/Flash_Player/macromedia.com/support/flashplayer/sys/settings.sol and I have a working copy of it from another installation that somehow works, but even with a 1-1 comparison with the default file I couldn't identify the correct variable to set.
Disabling hardware acceleration at all while keeping libvdpau1 would be the best short-term solution, IMHO.
Unfortunately it's impossible to do so via the settings menu, since it's not possible to uncheck "Enable Hardware Acceleration".
I've found the relevant setting to be into ~/.macromedia/ Flash_Player/ macromedia. com/support/ flashplayer/ sys/settings. sol and I have a working copy of it from another installation that somehow works, but even with a 1-1 comparison with the default file I couldn't identify the correct variable to set.