On 16/04/2015, Petter Adsen <[email protected]> wrote: > On Thu, 16 Apr 2015 15:21:46 +0800 > Bret Busby <[email protected]> wrote: > >> On 16/04/2015, Petter Adsen <[email protected]> wrote: >> > On Thu, 16 Apr 2015 14:46:46 +0800 >> > Bret Busby <[email protected]> wrote: >> > >> >> On 14/04/2015, Bret Busby <[email protected]> wrote: >> >> >> >> >> >> <snip> >> >> >> >> > >> >> > In the Debian 7 installation on the Acer V3-772G, for >> >> > System -> Settings -> Details -> Overview, it has >> >> > >> >> > " >> >> > Processor: Intel Core i&-4702MQ CPU @ 2.20GHz x 8 >> >> > Graphics: Gallium 0.4 on llvmpipe (LLVM 0x209) >> >> > " >> >> > >> >> > and, for >> >> > >> >> > System -> Settings -> Details -> Graphics, it has >> >> > >> >> > " >> >> > Driver: Gallium 0.4 on llvmpipe (LLVM 0x209) >> >> > Experience: Fallback >> >> > " >> >> > >> >> >> >> I note that, having just installed (and presently updating) Ubuntu >> >> 14.04LTS, on the Acer E5-521-238Q, the same graphics drive shows as >> >> being used, as for Debian 7 on the Acer V3772G; >> >> >> >> from System Settings -> Hardware -> Overview, I have >> >> >> >> " >> >> Processor: AMD E2-6110 APU with AMD Radeon R2 Graphics x4 >> >> Graphics: Gallium 0.4 on llvmpipe (LLVM 3.4, 128 bits) >> >> " >> >> >> >> and the external monitor does not work with either Debian 7 or >> >> Ubuntu 14.04LTS. >> >> >> >> So, whilst the Ubuntu web site shows the CPU to be certified as >> >> compatible - at >> >> http://www.ubuntu.com/certification/catalog/component/dmi/4365/dmi%3AAMDE2-6110APUwithAMDRadeonR2Graphics/ >> >> >> >> it appears to me, that both Debian 7 and Ubuntu 14.04 LTS, do not >> >> really have an adequate driver for that CPU ("Processor: AMD >> >> E2-6110 APU with AMD Radeon R2 Graphics x4), as they both can not >> >> drive an external monitor through it. >> > >> > I *seriously* doubt that the CPU has anything to do with it. It will >> > either run x86 code (ie Debian/Ubuntu) or it won't. This is more >> > likely a problem with the GPU driver, or the way X is set up. >> > >> > What output do you get from "xrandr" when you have booted the >> > machine with the monitor connected? >> > >> >> In Ubuntu 14.04 LTS; >> >> " >> bret@bret-Aspire-E5-521:~$ xrandr >> xrandr: Failed to get size of gamma for output default >> Screen 0: minimum 1366 x 768, current 1366 x 768, maximum 1366 x 768 >> default connected primary 1366x768+0+0 0mm x 0mm >> 1366x768 76.0* >> " >> >> In Debian 7; >> >> " >> bret@debian-Acer-E5-521:~$ xrandr >> xrandr: Failed to get size of gamma for output default >> Screen 0: minimum 1366 x 768, current 1368 x 768, maximum 1368 x 768 >> default connected 1368x768+0+0 0mm x 0mm >> 1366x768 0.0 >> 1368x768 0.0* >> " > > So X can only see one screen. I take it this is a laptop, and the > screen X sees here is the internal screen? How is the other screen > connected - HDMI, DVI, D-SUB, DP? I will see if I can get the time > later today to read through all your previous messages on this and see > what the outputs you have posted can tell me, right now the only thing > I can think of is to try the AMD fglrx driver if you haven't already. > > If the GPU in your machine is a newer model, that might help. I would > suggest you do a web search on the GPU model number, "radeon" and > "second display" (all in one string), and see what you come up with - > maybe the problem is a common one. > > Petter > > -- > "I'm ionized" > "Are you sure?" > "I'm positive." >
the computer is an Acer E5-521-238Q laptop computer. The only screen found by Linux (both Debian 7 and Ubuntu 14.04LTS) is the laptop screen. The external monitor is a Dell ST2310, connected via HDMI. -- Bret Busby Armadale West Australia .............. "So once you do know what the question actually is, you'll know what the answer means." - Deep Thought, Chapter 28 of Book 1 of "The Hitchhiker's Guide to the Galaxy: A Trilogy In Four Parts", written by Douglas Adams, published by Pan Books, 1992 .................................................... -- To UNSUBSCRIBE, email to [email protected] with a subject of "unsubscribe". Trouble? Contact [email protected] Archive: https://lists.debian.org/CACX6j8N-uG+FxOdaYhQpOMdY0fB01MZB55U=ohfjbmbfdmw...@mail.gmail.com
