https://bugzilla.novell.com/show_bug.cgi?id=862961 https://bugzilla.novell.com/show_bug.cgi?id=862961#c3 --- Comment #3 from Bill Dimm <bdimm@hotneuron.com> 2014-02-16 18:36:47 UTC --- I've done some additional testing and I've found that my initial hypothesis for the cause of the problem is wrong. Useful observations: 1) When I boot with the laptop in the docking station with an external monitor turned on, the encrypted partition password prompt is not visible at all on the laptop screen (native resolution 1600x900). It is partially visible on the external monitor (tried monitors with 1920x1080 and 1680x1050 native resolution) but is shifted partially off the bottom of the screen. On the external monitor there is about an inch of black along the top edge and a half inch of black along the left edge of the screen (may not be obvious without looking carefully since the password screen background is almost black). It appears that the entire display on the external monitor is shifted somewhat down and to the right, and that is the cause of the password prompt being partially off the screen, not incorrect resolution. If the external monitor was being driven at 1600x900 (the laptop screen's native resolution) as I initially thought, the display should be the same on the laptop screen and the external monitor, but it is not -- the laptop screen does not show the password prompt at all. After entering the password for the encrypted partition, the login prompt comes up and the screen is NOT shifted for the login screen, so there is some sort of difference between how the display is being driven for the encrypted partition password prompt vs. the login prompt. 2) I noticed that the background for the encrypted partition password screen on the laptop screen seemed to be truncated along the right and bottom edge when an external monitor was connected, so I used a ruler to measure the size of the gecko in the OpenSUSE logo on that screen and also on the login screen that came up after entering the encrypted partition password (which does not seem to be truncated along the right and bottom edges). The gecko was noticeably bigger on the encrypted partition password screen than on the login screen on the laptop screen. On the external monitor, the gecko was the same size on both screens. This leads me to believe that the external monitor is being driven at the same resolution for both the encrypted partition password entry screen and the login screen (or at least that the password screen is being rendered at the resolution the OS is sending to the monitor), but the laptop's screen is being driven at different resolutions for the encrypted partition password entry screen vs. the login screen, causing the prompt for the encrypted password to be completely off-screen on the laptop screen due to that screen being driven at the wrong resolution. 3) The exact same effect is seen when the laptop is taken out of the docking station and the external monitor is plugged directly into the VGA port on the laptop. In fact, the phenomena is observed even if the external monitor is turned off. Just to reiterate, if you have an external monitor connected (directly or via docking station), even if that external monitor is TURNED OFF, you will not see the encrypted partition password prompt on the laptop's screen, i.e. if the external monitor is turned off you will not see the password prompt anywhere. To summarize: If an external monitor is plugged in, even if that monitor is turned off, the screen that prompts for the encrypted partition password distorts (e.g. gecko is bigger) on the laptop screen in a way that causes the password prompt to be completely off the laptop screen (not visible) even though that may be the only monitor where you might hope to find it (only monitor turned on). Furthermore, if the external monitor is turned on, the screen is shifted in a way that puts the password prompt partially off the bottom of the screen on the external monitor. This distortion of the display on the laptop screen and shifting of the display on the external monitor is not seen on the user login screen, only on the encrypted partition password prompt screen. Again, I will point out that regardless of what is causing the display to be distorted or shifted, it would not be nearly such a big problem if the password prompt were positioned at the center of the screen instead of along the edge where there is a risk of it falling off the screen and being completely unseen if anything goes wrong. -- Configure bugmail: https://bugzilla.novell.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.