On Thursday, November 3, 2016 at 12:50:13 AM UTC-4, Andrew David Wong wrote: > -----BEGIN PGP SIGNED MESSAGE----- > Hash: SHA512 > > On 2016-11-02 08:56, John Maher wrote: > > On Thursday, October 27, 2016 at 12:42:18 AM UTC-4, Andrew David Wong wrote: > > On 2016-10-26 15:53, Gaijin wrote: > >>>> On 2016-10-26 13:38, John Maher wrote: > >>>>> On Wednesday, October 26, 2016 at 9:05:48 AM UTC-4, Gaijin wrote: > >>>>>> On 2016-10-26 12:43, John Maher wrote: > >>>>>>> I'm getting the strangest thing on my screen. I'll be working and the > >>>>>>> XScreenSaver dialog pops up (indicating the screen is locked) and the > >>>>>>> screen goes black. However, the screen is not locked. I have to move a > >>>>>>> window around to redraw my screen. This has always happened since I > >>>>>>> started using Qubes about 3 weeks ago. There appears to be no pattern > >>>>>>> that prompts this response. Bizarre! Any thoughts? > >>>>>>> > >>>>>>> Thanks. > >>>>>>> > >>>>>>> John > >>>>>> > >>>>>> Yeah. I had the same thing happen when I upgraded to R3.2 as well. I > >>>>>> asked the same thing but nobody replied. > >>>>>> https://groups.google.com/forum/#!topic/qubes-users/xjHi2TcYBAQ > >>>>>> > >>>>>> It still happens from time to time. Seems to happen less if I have a > >>>>>> lot > >>>>>> of free memory. Closing down some memory hungry AppVMs seems to lessen > >>>>>> it, but I haven't been able to specifically replicate it. > >>>>> > >>>>> Interesting, because I think I have more than enough memory (32 GB). > >>>>> Thanks. > >>>> > >>>> I've got 16GB myself. It's not that the memory is full, but it seems to > >>>> happen more when I have a lot of VMs open in one desktop. That may just > >>>> be a coincidence though. > >>>> > >>>> I'm glad to see it wasn't just me though. I never had this happen with > >>>> earlier versions of Qubes on the same hardware. Not sure if it might be > >>>> the XFCE or a video driver issue. (I've never installed the nVidia > >>>> drivers.) > >>>> > > > > Thank you both for reporting this. Gaijin, I'm sorry I missed your thread. > > > > Just to confirm: Are you both using Xfce4? > > > > Tracking the issue here: > > > > https://github.com/QubesOS/qubes-issues/issues/2399 > > > > > > Sorry for the delay in responding. I used the default install for 3.2. > > > > I also just noticed that it appears that memory is not being purged when > > apps are closed. Today when I "woke up" the screen from one of these odd > > screen saver like issues, it very briefly displayed a browser window with a > > site I was on yesterday. I looked carefully and confirmed that I did not > > actually have that window open on my system. It's as if something from > > yesterday's memory was sent to the screen and then closed. Rather > > disconcerting. > > > > John > > > > I don't think that should necessarily be disconcerting. The Qubes security > model does not include or rely upon purging memory at any particular time > interval. It assumes that you, the authentic single user, should be the only > one with access to dom0's screen content. So, the fact that you're allowed to > see your screen content from yesterday doesn't constitute any violation of > the security model. You're still the same trusted user as you were yesterday. > (If I've misunderstood your concern, please let me know.) > > - -- > Andrew David Wong (Axon) > Community Manager, Qubes OS > https://www.qubes-os.org > -----BEGIN PGP SIGNATURE----- > > iQIcBAEBCgAGBQJYGsH3AAoJENtN07w5UDAwKtIP/2vblyc4Rf9uwU3M+WGv2K7V > T7VoTDfGjB8XWyX6LZW/TrtameFmAj/Rb0bINOrIWpkrP9RdNUm+0/BR10NkcLul > FqaxMOcl2u2Tk775VjYtC+Z7y1ycJDQjaMvtqrdDQkeGhMumzcDOHD9RufTFSIRm > 8ke7GxfMQBH7R0DJ5E26B7HZJg73k1RKFT5BbpmKrfHxBBEaJTUALeNFZnp2ekl+ > HrRV4u8+T/Tbwzha5e/iTvJEVTMcMxzD4uziaN+TfiK2Iwp40w0W8IdmRjPzdkLI > +PDhAfjpQCEcZIPT/V+u6GsMhUDJo5ABPs/as17YY4b8VMwm9F7/J2Oo6nfwl/Rh > gOnwVLFQKUtq3iaNbORDzAjBSEny6wYKlfvpL3IWGAHhH0mbP5j1ivSJoF+navuD > qPMvMyAuhFh7hSsTPJ0CTMrDZYTGVlSryLrvXUwl5Lf6zplXRxO6uGu3ruUnepxR > 9izVXApPBv/Cc41G3wrCUGN3deE1OpzNSxhQS+NK4B3kJSGAm4+Zi/F/B8yiR6Lt > L/DiLI04X1LZ/XW+ZrKKiQbqVKAzeDqkDPW1D4POEckQnEfPqMcc32LzQVf6ORvX > Xzjn+UhUcdTzINAuISwYeBdvBTk6Wk80T80nChZJdnSdWi6klvbcof96UNdD3sja > swBLAb3aU4hobRxFAcL7 > =Fv0E > -----END PGP SIGNATURE-----
If the memory that temporarily renders to the screen is as isolated from other appvms as expected rendered content (like an open windows), then, yes, I'm not concerned about leakage from one environment to another. I will say that it is simply disconcerting to see it display, security implications aside. More important to me, though, is the hope that this "screen saver" triggering will go away on future updates. Let me know if there is anything I can do to help that process. John -- You received this message because you are subscribed to the Google Groups "qubes-users" group. To unsubscribe from this group and stop receiving emails from it, send an email to qubes-users+unsubscr...@googlegroups.com. To post to this group, send email to qubes-users@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/qubes-users/53aac2a8-c906-4894-846f-af0ac14b519c%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
