Any way to make switching between discrete and integrated graphics from the BIOS work with proprietary drivers?
Solution 1
Currently there is no solution for this problem. You can read more about it here: http://phoronix.com/forums/showthread.php?78813-Simple-graphics-switching-through-BIOS/ I'll ask moderators to re-open the question when a viable solution comes into light.
Solution 2
I haven't tried this with an AMD adapter, but your issue is common to integrated vs. discrete Nvidia graphics setups as well (tested on a Lenovo Thinkpad T510s).
Under normal circumstances, an open source graphics driver is automatically selected by the X server during boot based upon your adapter selection in BIOS -- integrated vs. discrete.
When enabling proprietary drivers while the discrete adapter is in use, an Xorg configuration file is created in /etc/X11/xorg.conf
in order to explicitly tell the X server to use the proprietary driver. While this configuration file exists, X will use the driver specified in it rather than auto-detecting your hardware setup. You can see how this would be problematic when you switch back to your integrated graphics adapter; the AMD/Nvidia proprietary driver is still specified in the xorg.conf
file.
The way to safely revert back to your integrated graphics adapter is to delete the xorg.conf
file:
$ sudo rm /etc/X11/xorg.conf
Alternately, you may rename the file such that it can no longer be found by X:
$ sudo mv /etc/X11/xorg.conf /etc/X11/xorg.conf.backup
On your next boot, when no xorg.conf
file is detected, the X system will again auto-detect your hardware configuration and load the appropriate open source driver.
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Bucic
Updated on September 18, 2022Comments
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Bucic over 1 year
What I would like to be able to do:
I would like to be able to switch between my dedicated graphics card (AMD) and integrated chip (Intel) from the BIOS, that means:
Restart → BIOS: set to integrated Intel enabled (only) → boot
or
Restart → BIOS: set to discrete AMD enabled (only) → boot
This type of primitive switching works fine when running on open source drivers. However, as soon as I install
fglrx
, switching from AMD to Intel from the BIOS breaks the session and the system falls back to low-graphics mode on boot-up.What I did:
- fresh system, open source drivers with Intel enabled
- switched to AMD = no problemo!
- switched to Intel = no problemo!
- (the above repeated few times and tested for performance issues)
- installed proprietary AMD drivers per http://www.unixmen.com/ubuntu-12-10-and-amd-catalyst-problem-solved/ (PPA) ⇒ working fine after restart!
- switched to Intel ⇒ broken configuration, i.e. system boots to 2D/fallback mode!
Why do I need it?First of all, it's a matter of my curiosity. More importantly though, getting this thing to switch on AMD proprietary would be huge for me.
I was asking about AMD/Intel switching a while ago and while I got the answer, 1) it doesn't work 2) I can't contact the author of the answer 3) I suspect the answer is overcomplicated.
In summary I need help either with this question or with the old one linked above.
System information:
Ubuntu 12.04 amd64, installed clean
Lenovo Thinkpad T500
Intel GMA 4500MHD / ATI Mobility Radeon HD 3650-
Glutanimate over 11 yearsHi, I am facing a similar situation to yours (AMD HD5650/Intel core i5 integrated graphics). I have yet to find a solution for this problem, but I took the liberty to modify your question a bit for clarity's sake. I hope you don't mind.
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MestreLion over 11 yearsSide question: Why are you using a PPA for the proprietary drivers?
fglrx
is available in Ubuntu official repositories -
Bucic over 11 years@MestreLion Because I need fglrx-legacy, not fglrx. Please refer to askubuntu.com/questions/204410/…
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Bucic over 11 yearsDidn't work. After proprietary dr. installation I have no xorg.conf file and I still don't have it after switching back to Inel integrated, so there's nothing to delete or move. Must be something else.
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virtualpathum over 11 yearsIs there a directory like
/etc/X11/xorg.conf.d
? As well, are you sure it is the Intel adapter in use, and with the correct driver? You can check by executinglshw -c video
and looking for the line of output starting with "configuration". This should list the driver in use. -
Bucic over 11 yearsThe driver vendor is indicated Intel Corporation, version 07. Like I said there are no xorg.conf* files in /etc/X11/ The /etc/X11/ directory itslef does exist of course.
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Bucic over 11 yearsThe bounty ends tomorrow...
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Bucic over 11 years@BrunoPereira The current recommended installation procedure of fglrx-legacy (via PPA) doesn't give xorg.conf. I'm not proficient enough to continue the investigation on my own. I need instructions. Note: sudo amdconfig --initial doesn't produce xorg.conf. I didn't try sudo amdconfig --adapter=all --initial because, as stated, my system BIOS is configured for EITHER integrated OR discrete, so always single graphics adapter.
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virtualpathum over 11 years@Bucic Thank you for the bounty! If
lshw
is showing the Intel adapter in use, then I'm wondering whether the AMD discrete adapter is really being enabled. -
Bucic over 11 years@mirzmaster Intel was indicated because at that point i had it selected in BIOS. When I select discrete in BIOS, AMD is indicated. Everything is fine in this regard i.e. I've tested that in system adapter is activated strictly as selected in BIOS. Please move on.
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Bucic over 11 yearsReminder: currently we're at step 6 and I have no /etc/X11/xor g.conf.* files to delete from my system.